The issue with being "self-insured" is that when the money dries up
you'd expect someone else to jump in, if there is anyone that is, and that bills for long term problems are never 'final'.
We were asked to bail a friend out; acute appendicitis, after that he decided to go back home, no one got their money back.
Another one ran out of money at 74 with increasing health problems, he killed himself.
Recently I have been asked to help set up emergency funding for another person well in his 80's.
There can be a long time between getting ill and dying. Be prepared.