My dad expected to die in his 50's, because that's when his parents died. They were both smokers. He stays active, isn't obese (about 15 pounds left until he's in the healthy weight category), and is as fit as someone his age could be. He's 72, and yesterday I caught him with an axe chopping down an overgrown tree in the yard. I have to tell him to stop. His doctor expects him to live till he's 90, and be in decently good health through almost all of it. There are 60-year-olds that can barely get out of bed. He's a decade older, and planning his next skiing holiday.