Paul McCartney reveals when he will slow down

When asked by 'Rolling Stone' magazine if he could imagine touring in the same way when he turns 80, McCartney replies: 'Unimaginable – and unseemly'.
 
He's been living the life of a rockstar for the best part of his life, with his packed touring schedule. 
 
McCartney added that when he was 17, he thought 24 was old.
 
"People say age is a number. It's a big number the older you get. But it doesn't interfere, i'm not bothered. You can ignore it. That's what I do." he said.