I at least am not trying to argue that we're utterly doomed. But wouldn't it be a
hell of a lot easier to
not have to damn every ex-glacier? To
not have to build sea walls on every coast, and deal with year round hurricane & fire seasons, and desalinate massive quantities of water, and everything else? Yeah, we
can survive on the moon and grow crops in Antarctica. But notice, most people prefer living in Palm Beach and cultivating the Midwest.
It's like with bees. Some people go, who cares if neonicotinoids wipe them out, we'll simply make a billion incredibly advanced miniature robot bees to replace them. Ok, sure, we can probably figure that out in the next fifty years. But that seems like way more of a pain in the ass than just cutting it out with the neonicotinoids.
P.S. the insect populations are already massively cratered. That part isn't wild speculation about 2100, that's today. I'm sure you remember the headlines about the study in Europe finding 75% reduction in insect biomass over the last twenty five years. Oh, and the year round fire season is here in California.