maybe movies just seemed better when you were younger. that's how i feel. a couple years ago when i was still in early teens, i thought that shrek, george of the jungle and scary movie were the best movies i had ever seen. now that i've gotten slightly older [and oh so much more wiser] i do struggle to find a movie that i really like. maybe its because i've seen a lot of movies and have quite a bit to judge something against. or maybe its because i hear so many differing reviews about a single movie, some may think its brilliant while others give it a mere "meh".
also, so many movies are being made that a lot of people dont even get to see a lot of them. back in "the days" people would go to the cinema where they would only screen a couple of movies, not the usual 5 or 6 you can get today. i reckon that everyone 20 and over saw movies like the first Star Wars and E.T when they first came out because there wasn't much else.
one more thing, i think some people have stopped being impressed with special effects. they're getting more realistic by the minute, but so what?