I've lived in the US my whole life, I've been to LA once for a wedding, and I really don't see a single similarity between what's going on in LA and what's going on where I live (Northwest Arkansas).
My air is clean, my commutes are traffic free, the people here generally suck, and I have access to world class... everything, if I want it (well, maybe not transportation, but my car is nice, German even!, and I can get everywhere in it pretty easily). Because I'm wealthy, I can afford all of the things you get for free in Germany without it negatively affecting my way of life, which probably helps substantially, but that's part of America too.
I want to move to Europe from the US, everything you described is amazing, but maybe it's a shithole to you because you've only been to a few places in the US.
Hawaii is in the US. Puerto Rico, Alaska, The Everglades, Sequoia National Park, Glacier National Park, Yellowstone National Park; it's hard to go to those places and walk away thinking they're "shitholes".
The USA is huge. Some of it is a shithole, and where you lived for 15 years is probably closer to shithole than not, but "The USA is a huge shithole" is probably not as true as you're making it out to be here.