Our family motto is "Lutum, non morietur".
My father's grand father lived until 90. Mean as hell, drunk.
My grandfather on my dad's side lived until 89. Mean as hell, drunk. Smoked from the age of 12.
My dad died at 56 but, had a stressed out life.
Quad bypass in the early 1980's that didn't really help much. Had his first heart attack at 50. Damn near died from that. Only thing that saved him was sittin' in a hospital waiting room to see my older brother who passed out in a New Orleans bar and busted his head.
I figure I'm good to go until 85-90 years old.