When I was a kid in the 70's, watching the boys after school (I think that's when they were showing), I used to HATE it when there was a Shemp episode. Now he's my favorite. I think he is such an underrated stooge. His funny walk, his double takes, his overly dramatic reactions to perceived pain (such as when ketchup leaks on him and he believes he's dying), his hilarious ebeebeebee sucking sound (which I would love to know the history of), his fighting routines where he goes round and round with missed punches and turns and then eventually gets knocked out with one punch from someone who patiently waits until Shemp's ridiculous routine is done, and on and on. Although nobody could be Curly but Curly, I think the stooges could have been just as good if Shemp was involved from start to finish.
My only regrets are that a) Jules White had to start reusing so much footage towards the end (thereby reducing Shemp's role in new shorts) and that b) Shemp died so young, in my opinion while he was still at the top of his game (though I've read many reports to the contrary, I don't really see that myself when watching his last shorts).