Ex-Rolling Stone Bill Wyman takes down his bandmates.

Bill Wyman says the Rolling Stones only keep performing because the band members have no life outside the band.
"I think Mick and Keith only go on tour because they don't know what else to do with their time," he told German SZ Magazin. [...]
Wyman also blamed Jagger and Richards for the Stone's musical stagnation.
"They like to play things safe, that's it. The Rolling Stones will never develop musically."
"Some artists take risks, like David Bowie, who sounds different on each album. But not the Rolling Stones."

Bill would no doubt know, seeing as how he played with the band for nearly 30 years of not developing...