posted:Before that, he had talked about doing the prequel trilogy and even possibly a sequel trilogy, but as he was working on ESB and ROTJ, he decided to wrap the story up with episode 6, which is when he made Leia the "other" and decided to have the Emperor vanquished in Episode 6
posted:He lost his enthusiasm for making the movies after ESB and didn’t want to be known as “Mr. Star Wars”, so he cut the story short and ended it at ROTJ.