I would argue almost everywhere in the world quality of life is fantastic if you are rich. What is the huge difference between living in a gated community in California to doing it in Thailand?
I have the feeling, and again, I do not live there so I cannot be sure (and can you be even if you live there?) But from books, docus and US friends, the difference is not 1000x even. It is just another world. That is simply not true here.
I guess it is a matter of taste if you can stomach that inequality. I walked (yes, strange EU thing where one uses legs instead of wheels) through some part of Fort Lauderdale and it looked like a bloody war zone. I could not live in a country that permits that. Your have poor here but that is exclusively mentally challenged(or what is the current PC term?) People who get help but always fall back, and very few of them. I recognize the vagrants in my home city from decades ago: still the same people: they have a state provided house and get help but it does not help. You cannot fix that. But rows of addicts turned criminals lining the streets in tents and worse. In the richest country on earth. Rich people should be ashamed that happens on their doorstep. They can and should fix it today.
Your snarky comment is just pretentious cherry-picking. I can walk you through some neighborhoods in France, Sweden and the UK where you'd also wouldn't want to live.
And it is not cherry picking: I know those places too: I do not count the UK as that is another Anglo Saxon country so it seems to copy the US values faster (like Australia where the best city in the world to live apparently, Melbourne, I literally trip over the drug addicts in every street and I go there a lot). And yes, there are places enough I would not want to live but they do not look quite as bad as some things I have seen in the US which were more akin to New Delhi. Maybe I did not travel enough and also not the point; if you are the richest country in the world you simply cannot allow that. In my opinion of course.
Of course, all of that is still very much generalization, and I find comparing quality of life in Europe with US is more or less dick measure contest. You try one when there are no fact based arguments to talk about. NHS versus Medicaid, for example, that's could be a good debate.