The point is that death is inevitable. You can either accept the inevitable or fight it, you get to the same place regardless.
One of the recurring characters on Star Trek were the omniscient immortal Q. One of the recurring subplots was of the Q getting bored of being immortal. "For us, the disease is immortality." https://www.youtube.com/watch?v=iqvxufh6ZDo
It's one thing to have purpose, or meaningful things to do. Sometimes people get to the place where they're just taking up space. My mom's 97 year old friend (stroked at 89, can't communicate) spends 7 days a week in her little room at the care home. We try to visit semi-regularly, but that turns out to be about two hours a week, or every-other-week. I've heard lately she's getting herself out of bed and falls. She is kept alive, but she doesn't really care to live. I think she was able to express this to her helper, when she was living at home...