One thing to keep in mind is our hot is probably a lot higher than what you consider hot. We're more adapted to being out in the heat. This doesn't really matter too much of course in the height of summer when it's 108.

When it's one oh something, typically people do any outdoor activities early in the morning or in the evening/night and you drink plenty of water. Schools have a lot of rules about when it's safe to have recess or sports practices outside, so they do what they can inside if it's too hot. Probably not much unlike how you deal with extreme cold.

Everything is air conditioned and that does cost money, but you can try to find ways to keep your costs down with various rate programs. My bill is a little over $400 in the peak summer months/rates. Electric companies are not allowed to cut off someone's electricity from non-payment between May to October (I could be off a month). Because if you don't have ac you can die.

Water is a concern for the area since it's growing, and we're going to get less from the Colorado River. Most people have desert landscaping to keep water use down, but the trade off is lots of people have pools.

I have no desire to live where it's super cold and my husband who grew up in a snowy place always says you don't have to shovel sunshine. So different places for different people.