(1) sea levels aren't going to rise noticeably in just a day or a year or a decade. If they rise a lot over a century or more, we'll just gradually tend to move

(1) sea levels aren't going to rise noticeably in just a day or a year or a decade. If they rise a lot over a century or more, we'll just gradually tend to move inland over time. As old buildings need to be replaced anyway on that timescale we'll build new ones further inland. (2) Even the IPCC says the next 1-3 degrees of warming will improve agricultural productivity. So if feeding the world is the priority we don't want to stop warming now even if we could - we should wait for at least another degree or two. In a warmer world you get longer growing seasons in the places that are most productive today for food crops, and in a more CO2-rich world timber forestry becomes much more productive near the equator due to CO2 fertilization. So for at least the next 50-100 years, warming is a boon. A good thing. That gives us at least 50-100 years to check our predictions and figure out what, if anything, we need to do next. (Which is long enough that it's ridiculous to assume current trends will continue, but it can't hurt much to think about it.)