Just this week, a friend who is middle class with chronic but manageable health problems was expressing serious intent on leaving the U.S. precisely because of long-term bankruptcy from medical cost prospects.
If your friend emigrates, they may put a burden on the country they go to. Even if they are productive, the cost of their ailment (assuming its not just ridiculously ovepriced medicine in the US that is in reality really cheap everywhere else, in which case the nation he immigrates to should be overjoyed at the opportunity!) can slow economic growth over if someone with no ailment and the same qualifications emigrated instead.
So the US "sheds" a "cost center" and another country takes on the burden. American companies keep turning over record profits and stock valuations while its poor and sick suffer and die, while other nations are burdened with those America should have taken care of itself with its vast wealth if only it had any morality to care about its citizens.
Not necessarily - old or feeble doesn't mean useless. Brain drain is a real thing ...
https://en.wikipedia.org/wiki/List_of_minimum_annual_leave_b...
While you probably have PTO in the US, the typical leave is 2 - 3 weeks, many companies will offer unlimited PTO to further obfuscate how much time you are expected to take and avoid PTO payouts.
I mostly think people with money in the US are unlikely to have much different quality of life than developed European counterparts, though. It's mostly people with fewer resources that are disproportionately worse off.