Genetics seems to count for a lot. Lifestyle is proven to have a huge effect on quality of life and the risk of certain ailments, but doesn't seem to be the main factor in longevity. As my dad used to fatalistically say: "When you're gonna go, you're gonna go." (Ironically, his lifestyle has resulted in him living under 24/7 care, but he's still alive.)
That's probably a bit too simplified; if you're a smoker and get lung cancer at 65 then it's very conceivable you would have lived longer if you never smoked (not certain: lots of things can cause lung cancer). It's even more clear-cut with things like asbestos.
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Genetics seems to count for a lot. Lifestyle is proven to have a huge effect on quality of life and the risk of certain ailments, but doesn't seem to be the main factor in longevity. As my dad used to fatalistically say: "When you're gonna go, you're gonna go." (Ironically, his lifestyle has resulted in him living under 24/7 care, but he's still alive.)
That's probably a bit too simplified; if you're a smoker and get lung cancer at 65 then it's very conceivable you would have lived longer if you never smoked (not certain: lots of things can cause lung cancer). It's even more clear-cut with things like asbestos.
As for ol' Dicky specifically, he seems to be doing pretty well for his age: https://www.youtube.com/watch?v=oL3AijekRYw