My grandmother was born in the US not quite 2 years after her parents immigrated. I think semi-often that if she had been born in Sweden I'd be eligible for a passport. I suspect that if the barrier to entry were that low I'd have made the move.

No because most of those places are too cold

If I could find somewhere with good social and economic policies and good weather, I'd already be living there. But all the good places are cold.

If I was going to be selfish, yes, I would move to a country that has more progressive policies and government. I refuse to be selfish though. I'm in medical school and hoping to become an ER physician in the safety net county hospitals for the express purpose of doing everything I can to help the people that have no way of escaping. I probably would have a pretty easy time taking my medical degree and moving almost anywhere because doctors are in demand pretty much everywhere, but it would be against everything I stand for and would be in complete opposition to my goals. I know that I won't be able to move the needle very much, and as an ER physician I'd be making a difference just to my patients and perhaps my community, but I still have to try. I want everyone to be able to access food, housing, education, and healthcare equally and I can't work towards that reality if I just run away from the worst of it.

Fucking yesterday

Probably not, I am fortunate enough to live in a great place with plenty of wilderness nearby. With friends and family to boot. I'd rather fix what we already have :)

Sure, as long as it is unopposed the world and has access to every natural resources on earth.