Yeah when guys like that (Jagger, Daltery, Vedder etc etc) play guitar on stage seems silly. I was watching a cool behind the scenes doc on Elvis on tour the other day. He opened a show doing Lawdy Miss Clawdy...stage hand puts his guitar on him...he does the song...stage hand takes guitar off of him and he never touched it. Classic, silly and cool all at the same time.
"I've been told this and it's been proven by research - He who fucks Nuns will later join the Church"