Watts's personal life appeared to be substantially quieter than those of his bandmates and many of his rock-and-roll colleagues; onstage, he seemed to furnish a calm and amused counterpoint to his flamboyant bandmates. Ever faithful to his wife Shirley, Watts consistently refused sexual offers from groupies on the road; in Robert Greenfield's "STP: A Journey Through America with The Rolling Stones", a documentary of the 1972 American Tour, it is noted that when the group was invited to the Playboy Mansion during that tour, Watts took advantage of Hugh Hefner's game room instead of frolicking with the women. "I've never filled the stereotype of the rock star", he remarked. "Back in the '70s, Bill Wyman and I decided to grow beards, and the effort left us exhausted." In a 1996 interview with "Rolling Stone" magazine, he said that he had sketched every bed he had slept on while on tour since 1967. By 2001, he'd filled 12 to 15 diaries.