For me, the human system is the source of misery, not life. It's not so much being world weary, I identify with what lasts (Earth, and its cycles), it's more to do with the unaccountable way that since the advent of agriculture, there's still people dying of starvation. What are the bad, non reasons for this? There's always been a desire for immortality, and it seems the further this bandwagon (mainly driven by tech and science obsession, but also religion, economics, any and all fundamentalism) goes along, the deeper we get into what can only be described as a sterile and lifeless, virtual reality that denies death and life to the extent the one reality is lost.
Once our parents were seen as omniscient, unlimited, but when we learned they too would die along with the maggoty, dead squirrel on the road...we would need to develop a character to fit into undying, unlimited institutions of culture; this need to identify with something immortal has shown up in repetitive ways in organized (secular) religion, money economies, and most dominantly in our times, tech. and science determinism (through tech and science, by damned we will conquer death once and for all). Jesus died so you won't have to. AI lives so you don't have to. Indigents exist as pavement (miniature Jesuses) for the earthly paradise of the elite (who think they are immortal, at least for having made their mark). Once you're disillusioned by psychological, character armor and the culture which shores up psychological armor ...indeed, one becomes weary of his specie's interminable runaway attempts to deny death. In not accepting suffering and death, a full life can't be lived, a life of joi de vivre remains out of reach, tantalizing only.
The main symptom I see as we go further down this rat hole of make-believe, psuedo-reality: people are getting stuck in emotional development and, in safetyism culture where no one can allow themselves to feel vulnerable, are crusty as children (a kind of pedomorphosis), alexithymia run rampant, adults getting addicted to video games since they can't tell the difference between vital needs and video games. Parents are spying on their teenagers, unable to tell they themselves have been eviscerated by the anti-privacy movement, mass-surveillance catastrophe, so they go on and treat their kids according to their own dead unawareness.
You won't last. The seconds are ticking away. You won't have much time in the end to enjoy the leavings resultant of a partitioned, departmentalized life. People go on vacations. People retire. What are they vacating? Retiring from? What has been separated from what? Back to the question this thread is based on. If we've made it to the place where kids are taught mantras like work-life balance...the corollary is you aren't a fully vital being when you aren't on vacation or retired. Thus, people haven't the vitality - they've had the requisite shift of agency into death instinct - to understand what they're even doing. Unnerving.
Schopenhauer1, I think many people are sleepwalking . If you think it's better with no life, fear not, for there isn't any. Everyone is awake and asleep in exactly the same way, which has a canceling effect on conscious awareness. Everyone must obey the same rules, standards, procedures, techniques, codes, computer programs, and protocols... their agency is eventually excised by this. If a system of rules can operate itself...what need for living, conscious beings? If the AI and automation really gets going, it will be clear people would rather not be alive, inasmuch as they will allow the AI to replace all the work of living. Then the pain will go away, you can sit on an actual beach or more likely a virtual reality one, and waste away into oblivion. You can die in this video game, but not die...so strange.