I agree with Spaffe and footbalm, It's great that we can prolong life, but it shouldn't be forced upon people, we need to release our massive fear of death and instead live our life while its good, but if/when we become some vegetable in an old folks home doing nothing with our lives... I'd rather just zoom my chair in front of a bus or something than live in a home.
That said, my grandfather is 84, and up until he had his new wife, he walked 5 miles (fast walk, practically a jog) every day, had no fat on him to speak of and spent most of his time playing his bagpipes and building furniture (for friends and family) and shit in his basement.
Sadly, she came along and fed him saucy/fatty foods and in 3 years he's now had open heart surgery. joy. stupid bitch.