I am/was in the same boat as OP. I moved back to Germany after almost a decade in the US (mostly Silicon Valley). Closing your eyes does not make the problems go away. Even if you don't care and avoid the tens of millions of left-behind people, for myself, looking at things like health care was enough to give me second thoughts. It is nice as long as it is nice. I had a colleague, enterprise sales, very good income, who ended up living in the streets in the Bay Area due to a few turns of bad luck that could happen to anyone. Health care cost issues were part of it, but it only got really bad because of a the self-reinforcing feedback loop since there was no help available early (and the very late help was privately organized from people who knew him once they became aware of his dire situation). I venture to claim that he would have been okay if similar bad luck had befallen him in his native Germany.

I'm not sure how seriously other people take this, but I find it curious that a huge part of entertainment in movies, shows and games made/consumed in the US is about violence horror, and/or the end of society or even the world (oh and "heroes" of course - always coupled with violence). That is not a global phenomenon, or it only is in as far as Hollywood has always been exporting culture. It also is not normal, I can say from my own (almost half a century) life experience (first part of it on the Eastern side of the German border).

Myself, I can empathize with scenarios of the post-apocalypse as shown e.g. in "The Last Of Us", especially the violence and distrust between surviving groups - imagining myself in the area of the US in such a world. I can't imagine the same scenario in Europe, at least not on the same dystopian level. I would feel significantly safer in Europe after the collapse of civilization (said this commenter before getting murdered an hour later by another desperate European end-of-society survivor, haha - yeah, sure, can happen, it's just my gut feeling).

I have to balance my post by saying I still feel strong and positive about many things in the US. I'm not a "dark side only" guy when it comes to the view of that country. Still, even if I were rich I would not go back to live there, I don't feel good about the overall direction, even if a lot of things were to improve. All this darn celebration of violence and "heroes", for example, and as was pointed out here, science (so many immigrants holding it up), economic policies, politics (result of a feedback loop with economics and business policies, e.g. incentives for the media - what kind of news sells? Plus incredible concentration in a few hands).