The thing about really horrible climate in either direction is that it just kills the chance of any kind of enjoyable lifestyle because no one wants to leave their house when it's -30 or 110 deg outside. I just really can't imagine what would entice anyone to live in a place like Phoenix...a free house wouldn't do it for me. I'd rather live in a tent in coastal CA.
Here's something I hadn't even considered in the pantheon of horribleness, people dying from surface burns from hot pavement or other surfaces. How does anything get done in these places? How do people do all of the outdoor work that needs to get done in any city or town?
https://www.latimes.com/world-nation/story/2024-07-05/blazing-hot-surfaces-are-a-danger-for-catastrophic-burn-injuries-in-the-urban-desert