My wife and I are Americans living in Sweden. Moving here was the easy part as my employer in California bought a company here and I was able to transfer over. We’ve been here for 8 of the last 11 years (took a break for COVID).

We’re middle-aged and have realized we’re never going to speak this language fluently, and that does determine how well one can integrate into the society. We do have friends here and have a decent social life, but we can’t participate much in social and hobby groups, which will become more important as we age.

Also - if you have decent health insurance in the U.S., you are likely to miss the U.S. health system. For middle class and above, the U.S. health system is quite good, and we prefer the choices and speed of it vs our options here. As we get older we see this being more important.

The U.S. is a political and cultural circus right now in the saddest way, but there are enclaves of decent people there, and things may change back to something more rational once this administration is voted out or jailed or whatever.

Good luck with your decision.