Vegan Ethics Cows do more than just that. They actually have a richer social life than most realize, for one thing. Regardless, cows are constituted such that they enjoy wandering around freely eating grass and drinking water, just as we enjoy eating and drinking and moving around freely. — petrichor
I don't think that the default existence for life is pleasure. It certainly is not for me.
If we forget other creatures and just focus on humans there is a lot of problems in the nature of human life.
Humans have suffered from the same fate as animals through their history such as mass starvation, diseases, premature death and natural disasters. From a natural perspective as opposed to any human intervention we have had famines that have killed millions and tsunami's and earth quakes that have probably killed millions through out history. So there is no sentimental default state for being alive.
When it comes to purpose humans have been clever at inventing meanings including religions
....but many people have suffered from a horrible sense of futility and purposelessness including myself which effects every day life. In on one sense other life forms maybe lucky never to be exposed to existential dilemmas or to have the same heightened awareness of their future death.
There is a lack of justice in humans affairs and a persistent irrationality and hypocrisy we are not a good model for a moral exemplar.
Human suffering is very nuanced including the existential stresses I just mentioned. I was forced to go to church up to 5 times a week as a child and found that very stressful and boring. I was bullied in school and by local young people so I have not ended up with a positive perspective on humans.
Reflecting on all my experiences there has been a lot of distress and harm caused by existing and in this social framework. Another anecdote is that my older brother has had progressive M.S. for 20 years and has been paralysed by it, he has had pressure sores, pneumonia at least 6 times and so on.
This is another "gift" or reality of life. Personal moral conduct does not at all ensure positive outcomes. For the phenemonologists here I could give vivid descriptions of the 20 years of my brothers illness and my own problems if you like the tactic of invoking emotions.