They should have abandoned New Orleans long ago, ridiculous to keep rebuilding just before everything gets wiped out again.
In 100 years or so you may have oceanfront property there where you live.
Humans adapt though. We don't live in Pompeii anymore. Atlantis went...somewhere? Babylon isn't a big deal anymore either. Tikal, Ctesiphon, Neapolis, Lajia, all are no longer. I imagine eventually we will move. It might be later than we should, and end up costing a lot more, but there sure is a lot of land in the middle of the country that isn't populated right now, and with the weather changes some areas will get drier and others will get wetter. This will not happen overnight, so there won't be some mass exodus in front of a flood or something. New York, for example, will be swallowed up bit by bit.
In my hometown there is a section of the city that is on the edge of a bluff of sorts some 60 feet tall. The bluff is eroding and 2 houses now have been claimed. Several others have been condemned as they are likely to fall as well. Others are on the horizon as the city tries to figure out if they can do anything about it, or if they should, or what it will cost. Some of the people have moved already, leaving their homes empty. Some stay until they are more or less forced out. Yeah, hugely smaller scale, but the pace seems to be similar to what is projected, probably even faster. We haven't survived this long by being inflexible.
And frankly, and not to be too morbid, but the single biggest issue we face as a species is overpopulation. Water is already becoming a very scarce resource due to our ever-increasing demand for it, for example. There will come a time when water is traded like other commodities, and not due to global warming, but due to overpopulation primarily. Maybe this is the way our species survives.