It's obvious that many currently inhabited areas are going to become uninhabitable.

Not only will coastal areas be inundated but previously relatively temperate areas will suffer from regular inundation, storm damage, and/or droughts, or possibly all of the above in alternation.

This is already happening in Europe, California, Australia, and elsewhere. And we haven't even had significant sea level rise yet.

Anyone who doesn't understand what this means for developed countries - never mind rest-of-world - isn't thinking straight.