It's my genes that I'm worried about.
We are the Ancients that the folks of the Future will shake their heads at and say "how could they have been so stupid?".
Then, again, maybe the nuclear wars that finish us off will cool things sufficiently so that Global Warming turns out to be a hoax, in an ironic sort of way.
This is the way the World ends - not with a Bang but with an Oops.