This is really no different than the huge number of older retired people who move to foreign countries. Expats. Obviously, not for everyone as it is quite different and sometimes challenging to live in a foreign country.
As someone who has moved to SE Asia (Vietnam) and is 'only' 45, I think almost daily about how much money I'm saving for my eventual 'retirement' and how much happier I am.
Even better is that you learn about new cultures and ways of thinking. Maybe it is selfish, but I'm getting to experience so much more out of life than I ever have before.
My dad and a few friends have come to visit me. I can and have gone back to visit friends. But the reality is that you do make new connections and communities. No different than moving to a different state, except the flight is longer.
I will add that the thought of retiring to a hotel chain is awful. For even less money, you can retire to a nice house in the countryside of SE Asia (not that far away from anything really) and hire a local for 24/7 care.
Again, not for every one, but in my particular case I'm super happy with my choice.
As someone who has moved to SE Asia (Vietnam) and is 'only' 45, I think almost daily about how much money I'm saving for my eventual 'retirement' and how much happier I am.