Do you think singers and bands should hang it up when they

Reach a certain age?

The rolling stones come to mind

Frank Sinatra performing in his 80s

Their voices don't even sound the same. You almost feel sorry for them cause you remember them the way they were.

Ric flair in wrestling is the same thing.

If they enjoy it that's great. I mean from a fans perspective
"it takes a wise man to know when he is in error and a noble man to admit to it"