I guess this is a banter post, whatever.
I think we are screwed. Really profoundly screwed. I won't hazard a guess at the long term implications of major AGW (perhaps there might even be benefits somehow realized from it), but there's major basic logistical issues from coastal areas being drowned. And it's hard to see how that's not going to be a central issue of climate change.
And that's not even bringing in ecological disruption. Migration pattern disruption, proliferation of certain diseases, etc. Even before we ever get into the finer details of what will happen we have to get over displacing hundreds of millions, billions of people. That freaks me out.