I think the posts by Chill and MrBally tell you what you need to know. It’s all where you go within the metropolitan area and what you make it be for yourself.
The basic parameters are easy to see. It’s hotter than shit in the summer months. But then so are lots of other places, Phoenix, Palm Springs, Houston, Dallas and many others. The southeast is also hot, but with humidity thrown in. Water supply is questionable, but that’s the same for pretty much the entire southwest.
You have the big gorilla in the room, the strip/downtown. Well you would never have to go there if you don’t want to. Just skip it if it isn’t your thing.
There are other things. Crime, gangs, etc? Those are pretty much in every big or semi- big city in America. Homeless people on the streets and all that? Everywhere.
Being from SoCal, we’ve been to LV countless times. We usually drive out into the burbs to find restaurants and such. It looks the same as any other place in the USA. I travel quite a lot for work, and I’ve been to the vast majority of US cities multiple times. Often while I’m on the road, someone from home will ask “so what’s it like over there in XXXX City?” My answer is always the same. Well, here’s what I see: McDonalds, Target, Burger King, Best Buy, a mall, a multiplex movie theater, blah, blah blah. It’s exactly the same everywhere. When you go into the city itself, it’s the same everywhere. Can’t walk 10 feet without being hit up for money, expensive crowded restaurants, filthy conditions everywhere, sirens all night, wondering if you are going to get out of there alive.
This is the USA.
The key is to get into the middle of a nice suburban neighborhood, get a nice house (with a pool for the hot climes) and hang out and enjoy life. Pretend the rest of the world doesn’t exist!