Sir Paul McCartney says he has no plans to retire. He told Rolling Stone magazine, "I can't imagine ever not doing it. It's what I do, and it's what I've always done, and I love it so much. Of course, there's got to be some kind of physical limitation. But I haven't found it... If I do, then I'll have to rethink about the question. 'Til then, I'm ignoring it."