Based upon accounts I've encountered, The Who went on in an effort to ease Pete Townsend's grief over the demise of Keith Moon. The drummer they acquired was a good one but was insipid compared to flamboyant Keith. The band never regained its initial flare.All this begs the question...should The Who have kept going on?
What great songs would we have missed? Earnest question, not implying a thing.
I think The Zep guys did the classiest and most respectful thing possible. They had a great run and altered the culture...what more is there?
We drummers might sit at the back of the stage, but the stage would be empty without us.