What bands/artists should retire?

Now now, don’t get me wrong, I like The Who, but especially watching their Super Bowl performances, I kinda realized that they’re kinda weak now. I mean, no Keith Moon, no John Entwhistle, it’s not even really The Who anymore.

So what bands/artists do you think should retire because they’re past their prime/just are awful?

And don’t say Nickleback. We already know.