Goldilocks, I'm sorry but you couldn't be more wrong. It is not ridiculous to watch these guys rock out, despite their age. Have you seen them in concert? I saw them last weekend at Duke, and to be honest I had my doubts going in. I thought just like you do - that 60+ year-olds had no place at a rock concert. I doled out the $85 for a ticket because of who they WERE, and because I doubted they'd be around much longer.
What a surprise. They ran and jumped around, belting out rips, for over 3 1/2 hours. They played all the major hits we came to see and they played them as if they hadn't already played them a million times. The red-carpet they had rolled out for them (which included a moving stage, fire-works, torches that warmed your face from over 1,000 feet away, etc.) was worth the ticket price alone. I no longer doubt that Mick Jagger (now 62 years old) and company has 5+ more years of quality touring left in them. Pretty unreal.