If you have some in demand skills and can make a family income up in the $200k+ US range, almost any country is pretty nice from what I've seen.
I think what's scaring some people out is their perception that authoritarianism is rising, and freedom from religion is decreasing in the US, and that it doesn't seem to matter to a significant minority of people. We can't debate this on BITOG, but I think that is cause of some migration.
So if they have the skills or money, they can go where they want, to a place that they feel is better for them and their family. Everyone's opinions and views on this are different, and that's fine too.