I'm not sure why your comments got downvoted. These are questions I have been asking for the past few years. I haven't come up with any satisfactory answers, other than that I see a lot of people strongly holding onto some narratives that don't seem to be working out well for people. I have not seen anything close to a satisfactory answer, though I see a lot of people making the attempt.

To address some of the other comments in this thread: this idea that someone has to earn the right to live has not, historically, been the norm. Pre-modern societies tend to lean more towards values emphasizing community rather than values emphasizing individuals. There is a lot to say about this, philosophically, when you start looking at how modernity changed things.

One of the weirdest notions of modernity is this idea that humans are at the apex, with the implicit narrative that what is current will always be the best. Human brain achieved higher intelligence than any other living organism on earth, therefore humans are the apex predators. During the colonial era, the colonial powers considered themselves civilized ... and everyone else were savages, somehow lesser. Now, there are certain ideologies (democracy, free market, capitalism) that are considered as the apex.

There is something very broken about modernity. I'm not suggesting pre-modern notions are necessarily better. I do think this narrative of 'being the best' has blinded our modernist sensibilities, and we have yet to find a satisfactory answer beyond modernity.