One issue is that people who move to other countries almost always settle in major cities. Cities can be great, but they can also be some of the most inhospitab

One issue is that people who move to other countries almost always settle in major cities. Cities can be great, but they can also be some of the most inhospitable places on Earth no matter what country you are in. So you are almost always comparing your comfortable home environment (usually suburban in some way) against really urban environments. And it goes both ways. A French person is going to have as bad a time in D.C. just as much as an American is going to have a bad time moving to Paris. In their respective home countries, neither person would probably prefer the same arrangement for themselves!