I think I've climbed Mt Whitney half a dozen times or so. Camped on top three times. But I must say, doing a number of other peaks has been lots of fun. I completed all the CA Fourteeners (well, except for that technical one, Polemonium) some years ago, don't have the urge to do them again.
But branching out, I've pushed a mtn bike to the top of White Mountain, and have done a few TSDHs (Trans-Sierra Day Hikes). Then I started doing a few legs of the JMT and PCT, so now I have covered everything from Mt Whitney to Echo Summit at the south end of Lake Tahoe.
I have a few more hikes and mountains on the list. ...so little time, so many mountains to climb!