No one could touch him. Well, maybe not me, I'm too cynical, but the average Joe does. Cards and collectibles become expensive. Then, when the money is gone, or they simply miss the spotlight, these legends come back to beat on the gates and demand to be let back into the arena. This is nothing new.
Boxers typically retire again and again.
Who are we to judge. If they make the game fun, let them play. They are likely to keep making comebacks until they physically can't play the game anymore. Stripes was on Saturday night. Bill Murray is an overweight, 30-ish photographer who has to drive a cab to make ends meet.