Wealth only really matters to the point where you can support a good living. That "good" will vary but beyond that increases in wealth bring diminished returns.

Wealth only really matters to the point where you can support a good living. That "good" will vary but beyond that increases in wealth bring diminished returns. Think about a salary: if it's below a threshold you are unhappy no matter what. Above that any raise brings more marginal increases in satisfaction, you start looking at other things for that. The US is past that point so now it needs more than wealth.