My parents said, "if you have your health, you have everything."
That is, perhaps, easier for people with health problems to understand; than young, healthy people. As children, we certainly didn't get it.
We have a friend, a retired airline pilot, who had a cerebral aneurysm. A tall and very handsome man.
It crippled him, put him in a wheelchair, impaired cognitive function, and he became very emotional and started crying nearly every time he tried to talk.
He was confused and seemed miserable part of the time, despite having a great wife to take care of him; and the money to provide everything that he needed. Other times, he regained clarity and joked and laughed with us.
I'd bet that he'd give everything to have his health back.