Please change to: your purchasing power is better than most places in the world.
Do not confuse purchasing power with better life. 13% of Americans are on anti-depressants. I know many "successful" people in my very affluent suburb of a major US city, who have an addiction problem ( prescription drugs, mostly).
Add growing social isolation, caused by constant uprooting (moving from place to place to advance one's career).
As they say, "all that glitters is not gold"