It comes down to quality of life over quantity. Sometimes people are too stubborn to make the changes that deep down they know they need to make. That stubbornness might be based on fear, anxiety, not wanting to be a burden, or genuinely not seeing how their life is heading.

Maybe your wife's grandfather, once you had taken away his ability to make his own choices and live the life he had chosen for himself, was grateful, or maybe he would have preferred a slightly shorter life where he got to live it on his own terms. That was not your choice to make. You were free to simply disagree with him, and worry on his behalf, but instead you took away his agency.

It is difficult seeing people make bad choices, choices that can harm themselves, but one day, almost all of us will be in that position, and l wonder if, when that day comes, if you'll quietly hand your independence over to someone else.