A friend of mine had an interesting theory. He said Star Wars fans are just completely doomed to disappointment, because Star Wars being great in the first place was actually a complete fluke.
The way he broke it down was that it all came down to Empire Strikes back. Empire was genuinely a great movie, Sci-Fi or not. The other two have their moments but they were ultimately just silly fun action flicks in his mind, with plenty of problems and goofy nonsense. In that respect, the prequels were not that much worse (his opinion, not mine) than episodes IV or VI. But taken as a whole, Empire is so good that it raises up the whole original trilogy, but Empire is like some rare happy accident, almost a cinematic unicorn.
He figures that based on that, the odds of getting another Empire-quality Star Wars film are... well, never tell me the odds.