What I want is a long life of doing what I want. when I must die how doesn't matter, but if I can extend my lifespan (well span) by not getting a heart attack that is good: more years to enjoy life. If I can also extend my life by not getting cancer even better. Even if I must die if I can delay that with a good life that is what I want.

note that I said good life. There are lots of bedridden people, I don't want to be like that. I want to be like the old person still doing things in old age.