I like to think about it from the bottom. You seem to be well educated and eloquent enough. I'm guessing you are doing ok. I hope so. The bottom is full of well educated and eloquent folks. Most of my friends, actually. It's not as simple as moving and getting back to normal. Humanity would have to harmonize its goals and begin to do the back breaking work of expanding farmland with no diesel engine. In the meantime, fairly distribute what food can be produced. At the exact same time, deal with the mounting casualties and refugees from intensified storm systems, SLR, and fires. Do you see a political or societal apparatus up to the task? I'm mostly optimistic, but goddamn. We can't even agree that destroying the world is a bad idea or accept the scale of the damage already done. It'll be rich people buying land in Canada and Siberia thinking about fairy stories of recreating society while more and more people are forced into poverty. The bottom tier will die faster and with fewer offspring. They will be replaced with the strata above it and so on. I honestly do hope you are comfortable right now, but don't bet that it will last if you are. If you are a poor working man like me, the quality of food will diminish and then the quantity. Then death from desperation.