As someone who lives in the Houston metro area, I totally agree that there are places in the country better situated at the present moment. My broader point aligns with the other comment here - on the timeframe in which we'd think about these problems, virtually every area of the country will find itself wrestling with changing conditions, many of them with a net negative result. There was an interesting map I came across that tracked where climate change forecasts would move the "ideal zone" of habitation in North America - IIRC, quite a bit of the zone shifts into southern Canada and the northern midwest.