I would have wanted him to stop after 1989, as I love all three original SW movies and all three original Indy movies.

I know ROTJ was a worse movie than SW or Empire, but it was the first movie I ever saw, and I can tell you that the excuse Lucas sometimes gives us, that the "movies are made for kids" really works on ROTJ. As a child some of my favorite bits were the Ewok stealing the speeder bike, Wicket hitting himself, the Ewok with the stormtrooper blaster, Jabba knocking 3PO, etc, basically all the stuff adults hate about ROTJ. It's a wonderful children's movie really and some of the more "adult" stuff, like the Emperor scenes are also really well done.