"Do you think I shall live until I'm ninety, doctor?"
"How old are you now?"
"Forty."
"Do you drink, gamble, smoke, or have you any vices of any kind?"
"No. I don't drink, I never gamble, I loathe smoking; in fact, I don't have any vices."
"Well, good heavens, why on earth would you want to live to 90?"