I think that's a bad attitude. It's very possible that it's too late for an unmodified climate, but with some combination of solar radiation management and a record-setting transition to renewables, our civilization could make it out in (something like) one piece.
What's depressing is all the people who are still trying to disrupt that chance, even now.
Though this kind of thinking doesn't ever help things to improve. Still have to believe that we can fix things and we can improve things.