Maserati wrote:(1) ... I'm spending more and more time figuring out where to live.
(2) ... I got the overwhelming sense that there is something critical that everybody is overlooking, something seemingly trivial, but which will have a controlling and catastrophic effect--something like the power grid going down in the US, etc.
(1) I don't think you said exactly where you live except that you spend time in Europe. I can't see what you think would be "better" somewhere outside the US? I'm not American and I don't love the place, but personally (and I've travelled widely and currently reside, temporarily, in a Mediterranean country) I can't figure out what would make you wary about living stateside, assuming that's where you're from?
(2) Now you're talking crazy talk. That strikes me as more than a little bit paranoid. The world can always fall off the rails one way or another, but living in fear of it isn't healthy. I think I know what you need to do with all your money... buy one of Hitler's bunkers and stokc it with enough provisions to make it through the coming apocalypse. :-) Kidding, but man you gotta shake those anxieties...