Footnote: Keeping old folks in good morale is not an easy matter. So they don't spend their last years staring at the floor and not saying hello back to anyone. If a glass of sherry or a bowl of tobacco would help, I doubt it would shorten anyone's life, rather probably prolong it. Save the Puritan ardor for the young folks so they'll have a long way to go, and leave the long-timer's alone. My dad used to smuggle a bottle of sherry to my ninety-some-year-old great aunt in the religious old folks home. It helped her, but too many old gents gathered there and got rowdy, so no more sherry for her.
I like the biography of my weed use, in posts above. Especially me in my stoned frog mode. I'm a changed man.