Trying to be a better parent, Paul McCartney swears off smoking dope

^{McCartney, about to turn 70}

On the eve of his 70th birthday, ex-Beatle Paul McCartney has told Rolling Stone magazine he’s given up smoking marijuana so he can be a better parent to 8-year-old Beatrice, his daughter with former wife Heather Mills.

^{McCartney, at left, with fellow Beatles in earlier years}

Days after finally getting his own star in Hollywood’s Walk of Fame – the last Beatle to be so honored – he told the magazine: “When you’re bringing up a youngster, your sense of responsibility does kick in. Enough’s enough.”

According to the

, he did not explain why he didn’t see the need to stop his drug use while raising his four other

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