Are other people made very uncomfortable by people like this looking down their nose at the entire species? I'm just not sure what these levels of defeatism and misanthropy get you.
We are violently tribal. We are biased to short term reward over long term gain. Crack those two and you're well on the road to panacea.
If we don't overcome them, we don't adapt, we don't survive. The universe is pretty big - something out there will hopefully make it through the great filter, if not us.
Sure, from a selfish and anthropocentric point of view I want us to survive and prosper, but the reality is that we may not. We're not infinite and indefatigable.
Right now, we are on the path to certain doom. This can change, but whether it will in time is down to getting pretty much all humans everywhere to pull together.