I'm weirdly an optimist about climate change, or specifically the degree to which it will usher in an era of global devastation. Don't get me wrong, I think it'll be serious and costly, but I also think the time frames generally given give us time to adapt. It's hard to resettle coastal city inhabitants in a 10 year time frame, it's less hard to do so in a 50 year time frame.
My optimism is only relative, of course, and I in no way claim it's correct or that I think we shouldn't be doing something about the issue.