I've already made this clear to my family. If it ever gets to that point, no heroics please. In my last job we used to joke about getting a tattoo that said "no code".

conversely ... a family friend was diagnosed with malignant brain cancer around Labor Day ... his oncologist recommended chemo and radiation, even though he's 80, because he is a very healthy 80. Sadly, a repeat MRI showed that the chemo and radiation have basically done nothing. Other 80-year-olds might have been offered hospice, but he was offered a second-line chemo drug, again, because his health is so good. So I guess it's about more than just the number.