I see what you are saying. Despite what the critics say, it's rare that you see a movie that was so bad you didn't want to watch it. People _want_ to be entertained, and for those who like the escapism/fantasy that movies provide, it's hard not to enjoy them.
I agree with your summation of Star Wars. But it's funny, I was only a bit dissapointed in it after I started hearing all the other people who were dissapointed. I wonder if my dissapointment stems from "brainwashing" or whether I made up my own mind about that movie.
I still maintain, though, that Blair Witch was the worst movie I ever paid money to see. Jeepers Creepers would come in second.