Sir Paul McCartney 'knows' he can't perform forever

Sir Paul McCartney has finally come to terms with reality, saying that even if he would like to perform forever, he will not be able to.

The 71-year-old Beatles legend has previously spoken of his desire to keep working but knows there may come a time when it becomes impossibly to undertake gruelling tours, and plans to reassess his life after his next run of shows.

He told NME magazine that he sees himself doing what he does forever but like a footballer, there has to come a physical point where "you might not be able to do it," Contactmusic reported

He hopes that point never comes because he can't bear the thought of doing nothing with his days.