I can't speak for anyone else, but I have lived overseas....a number of times. What some people don't seem to understand about this topic is that two things can be true at the same time. It's not all good or all bad. There are a lot of great things about the US, like our founding principles, the rights that we still have, opportunities, etc. And many of us feel very blessed to be from here. But at the same time, for the last several decades things have been changing slowly but surely, because we have a corrupt government and subversive people in power. I know that a lot of people here will probably disagree with me on this, but I've been saying for years that our government was hijacked by internationalist traitors, and because of that, things have been getting gradually worse. Also, because a lot of people are apathetic, or too busy with everyday life, they don't seem to realize or care that our liberties and rights are under attack and eroding away.
Yes, of course it's still better in the US than many other places in the world, but that doesn't change the fact that things are changing and are going to continue to change, because iyam we've been sold down the river.