Paul McCartney Quit Smoking Pot To Be A Better Dad

Sir Paul McCartney, 69, may have looked younger than ever during his Grammy performance last Sunday, but the legendary rocker says he's getting too old to keep up with his marijuana habit. In a new interview with Rolling Stone magazine, McCartney reveals that Bob Dylan first introduced him to cannabis, which became a gateway drug to other substances including heroin, LSD and cocaine.

The former Beatle says he has developed a "sense of responsibility" while raising 8-year-old Beatrice, his daughter from second wife Heather Mills.

I did a lot, and it was enough," Paul says of smoking pot. "I smoked my share. When you’re bringing up a youngster, your sense of responsibility does kick in, if you’re lucky, at some point." He adds, "Enough’s enough – you just don’t seem to think it’s necessary."

The British hitmaker - who recently married third wife Nancy Shevell in October - says he smoked "wacky baccy" every day with his first wife Linda. When married to Heather Mills, she said he smoked marijuana as often as most people drink cups of tea.

The ex-Beatle, who has four other children, reportedly did not explain why he didn’t give up marijuana for them.