We've always assumed we were rich enough and righteous enough to do anything we wanted to do. The end of cheap oil ended both conceits. We no longer have the wealth to rule the world as our capitalist fathers thought we would. Our greatest moment was WWII, when we brought justice to a jaded and violent world. Our worst was Vietnam, when we lost our sense of justice. We have since sold our wealth and future to the Chinese, who despise us. We are a nation in decline and to answer your question: most Americans don't give a s**t.
Okay, I know I'm going to get a lot of heat for this but I think that the women's liberation movement started a domino effect that to this day is still being felt, with no relief in sight. When women decided that pursuing a career was more important than raising their kids that left the kids in the care of others or with no care at all(latchkey kids). What do kids do when left on their own? Get into trouble, experiment with whatever, have sex,.....Results: prisons filled with uneducated thugs, pregnant teens, in general, people who have had no real parental support becoming parents. Then they turn to welfare and repeat the cycle. That's just ONE of the many problems in the U.S. Simplistic? Maybe. But I'm an old fashioned woman who thinks that you shouldn't have kids if you can't or don't want to have a hand in raising them.
The main problem in this country is lack of educated thinking by adults. Politics has become so polarized that there is only parroting of the party line and nobody can act in a moderate fashion. This includes voters and pols. We spend our time tearing at each other over differences instead of working together for solutions.
Apathy, Ignorance,Greed...How many people that gripe about how bad our government is Actually Vote? How many people that gripe about how bad their neighborhoods are Actually get involved with their own communities? Our Constitution says "By The People For the People" but if folks Don't take advantage of that ie: Voting or even showing up for Great American clean up then, The Biggest Problem Is WE Our selves