It's interesting because on a long enough timescale, entropy will claim the relatively fragile techno-industrial civilization that makes the South habitable via A/C. While Northerners can grow their own heat without any high tech, you can't grow your own A/C. This inverts basic ecological realities regarding habitability. Notice the Amish don't congregate very far South; once you take technology out of the picture, the South is a miserable, difficult place -- far more miserable than Ohio, Pennsylvania, and New York. Frankly it drives me nuts, because the region with the best objective prospects for overall habitability -- excellent soil, hardwood forest, limitless groundwater, surface water, and high rainfall, low wildfire risk, plenty of game -- is the place that has no vitality, it is dying, there are no children here, there is no future is most of the rural North. This is because everybody is moving down to the synthetic 'A/C World'. People are not rational. If they were, they would settle in places that have taken entropy into account, and that are well-positioned for a failure of the techno-industrial system -- and they'd live there, buying timberland and having many children. This is the most sensible thing you could do. Instead: they buy condos in the South where a single power outage can kill, hurricanes flood, there are wild boars and weird hot-weather pathogens and so on. And if you live in the sensible climate of the North and have a family, the absence of families here almost forces your hand; you find yourself drawn southward as if by magnetism, because there is life there -- smack dab in a climate that is ONLY habitable because of the supply chain that produces industrial refrigerant. It makes short-term fatherly concerns conflict with long-term fatherly concerns, and any sensible Yankee father is embittered that he's stuck choosing between the barren depopulation of the North or the tenuous techno-fragility of the South.