He's one of the very few musicians who can say they want to collaborate with Bono, David Bowie and Lenny Kravitz and make it happen.
Jagger has been dealing with retirement questions for half his life. But it's become apparent that the Stones will roll on as long as Jagger and Keith Richards are physically able. Richards hits the 65-year milestone in a few months.
In an AP interview last October, Jagger said he looked forward to doing more work with the Stones. In his words, "We're not stopping anytime that I know about."