Even though things seem shitty now. I think that, on average, humanity's story is one of self-improvement. This Good Place quote comes to mind:

What matters isn't if people are good or bad. What matters is if they are trying to be better today than they were yesterday.

I think humanity is trying to be better today than it was yesterday. Human history is a story of more and more types of people being given more and more rights. Of slowly putting down our rocks and spears and guns and trying to live together. Of learning to care for nature while holding the power to destroy it. We've had backslides, but overall we've come a long way from the Apes we once were.

I think humanity deserves the chance to keep trying to better itself. I hope we get to the point where we are good enough to give ourselves that chance. As another scene from Good Place put it:

Come on dummy, faster.

I unironically agree with the premise.

I'm kinda thankful that even if we kill ourselves off and most life on Earth, it's almost certain that life will come back in full eventually. We'd have to do some real Earth -shattering stuff to prevent that.