A playground for the rich does not make a country perfect, again you are conflating being wealthy with being good for living. I never said the USA isn't wealthy, it's more that it's rather bad for living a normal life despite being the wealthiest country in history.
It's great to be rich in the USA, life isn't about being rich though, as much as your culture has ingrained that in your head to the point where, clearly on this comment thread, you don't even notice it.
Its not a playground for the rich, its a playground for the upper-middle class and above. No other country besides the US provides such well-paying wage labor. You can't make seven figures a year as a salary, as a worker practically anywhere else.
Life isn't about being rich, its just that if you work hard its not difficult to do well in the US and have anything you'd want at the best quality anywhere in the world. Anyone making $100,000+ a year (and that is ALOT of Americans) has a great time in the US. Yeah a lot of people don't make it but thats how it is. Without risk there's nothing interesting in life; I don't want a mediocre, boring life with a million social safety nets, I want something chaotic and crazy and constantly active, and you can't get that anywhere else.
It's great to be rich in the USA, life isn't about being rich though, as much as your culture has ingrained that in your head to the point where, clearly on this comment thread, you don't even notice it.