It used to offer the best general living conditions (for a race at least) for like 40-ish years! Mainly because the rest of the world had to get back on its feet after the world wars!
But after decades of hard work against your(?) very own interests not anymore
Being great is much different from being rich/easy/fun
Greatness stems from ethics and values, the values that america was and is based upon are lying, slaughter, bullying and selfishness.
America can never be great. The ground you walk on is held by the blood and bones of the true owners of that land, and millions of others who america slaughtered and is stil slaughtering for it's own "freedom" (which doesn't exist)