Correct, I really do not know how it is to grow up in the US. I've been there for quite a few times, that's all.
You know, there's no question that one can make a lot of money - that's the american dream, right, "one can achieve anything, if they just work hard enough for it". And that's certainly true to some limited extent. But there's also many, many very hard-working people who never get a proper chance - sometimes just because of reasons like that they grew up in the wrong area of a city. Or, their parents were poor.
Also, you make it sound like people are homeless and/or jobless by choice, and enjoy government benefits. Sure there is some people doing that and exploiting the system - that happens everywhere. But most people are not poor or jobless by choice, and nobody should be left on the street because they cannot pay for health insurance or even die because they cannot pay for cancer treatment.
Better social systems and better social security work - they are not a myth. This is the reason why all Nordic countries, and Denmark, Netherlands, Switzerland, Germany, Austria, are the countries where people are the happiest, the most satisfied, have the highest salaries, living standard is the highest, etc.
(And I do have a high education and well-paid happy job - but I still care for those less fortunate, because "shit" can happen to everyone and it can be out of your control.)