By global warming, I assume you mean man-made global warming. That is, the idea that humans, with their powered machines and factory farming, are primarily and exclusively responsible for the recorded global warming.
Here are my opinions:
If it were clear that humans had no influence on the climate, the whole discussion would definitely be less emotional and less offensive. One would have no other choice than to accept what is necessary, as one does with one's own death. The climatic changes happening on all planets and in all suns throughout the universe are not man-made, but natural and inevitable.
Can we be absolutely sure that we are primarily changing the climate? Of course not. Science can always be wrong, because it can simply overlook many things. That is, there may be much that we have not yet considered regarding climate shifts. We know very little about the mechanisms and interactions between the Earth's spheres, such as the ignorosphere, stratosphere, ionosphere, magnetosphere, etc. However, the activities of these spheres are probably determinant for our climate.
If there should have been times in the earth's history when there was a higher amount of CO2 in the atmosphere than today and yet it was much colder, and vice versa, times when there was less CO2, and it was much hotter than today, then there would be a good reason to deny man-made climate change.
Are we really so sure about the climate issue? There are people who advocate a different cosmology than the mainstream one. For them, it is clear that “we must not be deluded into thinking [“reducing air pollution”] will affect climate significantly. The connection between warming and atmospheric pollution is more asserted than demonstrated, while the connection with variations in the Sun has been demonstrated.”
https://www.holoscience.com/wp/global-warming-in-a-climate-of-ignorance/
As a true philosopher, one must remain neutral to alternative scientific models. For philosophers have often made fools of themselves in history with alleged empirical facts. The accusation of unserious fringe science is not tenable, since many great recognized scientists were ridiculed as pioneers by their colleagues back then.
The current climate debate tends strongly towards a psychogenic and sociogenic mass phenomenon, keyword alarmism, which I think is dangerous, because you lose your cool head, which you need in case of any possible danger. One should just take an in-depth look at the philosophy of science, the history of science, and the criticism of science, to be more relaxed. I am very skeptical of climate modeling. Human beings imagine that they can model everything. That is hubris. The world is always much, much more complex than we think.
Perhaps there is even no reason to panic at all, as some scientists, who seem objective to me, think: “Global warming is real. It is also – so far – mostly beneficial.” (Matt Ridley)
https://www.rationaloptimist.com/blog/how-global-warming-can-be-good/
A certain Bjorn Lomborg thinks similarly.
Whoever now says that these two are charlatans has obviously given up his objectivity.
A good discussion that the climate thing is not absolutely settled can be found here:
What Climate Science Tells Us, What It Doesn’t, and Why It Matters (Steven Koonin)
I agree with the following:
“Separating Science and State
Always keen to shock, Feyerabend sometimes described his position as “relativism,” but in fact he explicitly rejected what most people think of when they hear that term—namely the thesis that all views are equally true or false. What he really favored was a pluralism that refused to allow any one tradition, including science, to dominate all others politically in a democratic society. His positive defense of this view was essentially an adaptation of Mill’s On Liberty.
Mill gave four main arguments for the freedom to express one’s opinions, and Feyerabend takes a consistent application of them to entail that science ought to have no greater hegemony over society than the Church does.
First, any opinion that we try to suppress might in fact be true, so that by suppressing it we could be leading ourselves and others into error. Mill pointed out that to assume otherwise is to claim infallibility. Yet no one (other than a pope speaking ex cathedra) even claims to be infallible; certainly liberals and scientists do not. But in that case, they cannot consistently hold that some views ought to be considered beyond the pale and entirely unworthy of our attention.
Second, even erroneous and unpopular positions typically contain at least a grain of truth, while correct and popular positions are never entirely free of error. Hence, if we are to get closer to the truth, we need to allow these competing opinions to battle it out in the public square so that their adherents might learn from each other.
Third, even when some popular opinion is true, its adherents tend to become dogmatic and superficial in their understanding of the arguments in its favor when they have not had seriously to grapple with competing views.
Fourth and finally, a grasp even of the meaning of a correct opinion tends to get lost when challenges to it are never permitted. It becomes a banality that is merely parroted rather than understood.
Mill emphasized that it is not enough merely to hear out unpopular opinions in a grudging and perfunctory way. One must try to interpret them in the most sympathetic and persuasive form possible, if one is to discover what truth there might be in them and what weaknesses might lie in more popular opinions.
Furthermore, Mill stressed, it is not enough for the expression of unpopular opinions not to be legally prohibited. There must be no social sanction against their expression. Indeed, he regarded social pressure as more insidious than governmental control. By means of it, Mill says:
Society…practices a social tyranny more formidable than many kinds of political oppression, since, though not usually upheld by such extreme penalties, it leaves fewer means of escape, penetrating much more deeply into the details of life, and enslaving the soul itself.
In Feyerabend’s view, when science arrogates to itself privileges like those described above, it violates these Millian principles. Advocates of scientism would suppress views that conflict with prevailing scientific opinion, shouting them down and preventing their expression in the public education system. They thereby implicitly claim an infallibility that in other contexts they would say no one has. They also fail to learn from their critics, turning science into an ideology and its findings into a bag of clichés repeated robotically rather than understood.”
https://americanmind.org/salvo/scientism-americas-state-religion/
When someone wanted to counter me that this passage comes from a religious, conservative voice, I say: That doesn't automatically mean that this voice is wrong in this particular respect. One should beware of non- sequitur.
What if climate alarmism is a quasi-religious substitute? Since Nietzsche stated that we have killed God, the danger is great that we want to fill the void with something instead of simply accepting it.
It seems to me that humankind, as a human condition, always needs a vision of the end times in order to be motivated to act. Without a doomsday scenario with the option, hope, to be able to do something about it, humans would probably get very tired of life. So there is a psychological urge to look for reasons for a downfall. And those who seek, also find. But what if it is a mere fiction? Utility does not make truth. That it is a fiction is even more probable within the framework of this thinking. After all, why would a product of an elementary human need or urge coincide with reality. That would be just a big coincidence.
I admit, an imminent demise brings us together, makes us solidary, makes us more human, brings technical progress, makes us more heroic, and so on. Still, the downfall does not have to be true.
Anyone who thinks that we should not take any unnecessary risks and rather bet that the downfall will actually come and that we will actually be able to prevent it is doing nothing other than making a secular form of Pascal's wager. But anyone who is prepared to take this secular bet should inevitably also bet on the religious one. Because what would be the worldly downfall compared to an eternal torture in the hereafter.
The fact that there is still time to prevent the worst from happening, if we only make an effort now, will definitely motivate many. But the chance that the train has already left seems very high to me, assuming that we are responsible for the mess. But why should 2030 be the point of no return? Behind such a date lies only ideology and political propaganda.