Ghostbusters isn't that great, though. Neither is Twister or Robocop. And I love Predator as a sort of hyper-simplified pure action flick, but anyone who wants something more than explosions, one-liners and a bit of gore would be perfectly justified in turning their nose down at it as well.
The mythical golden age of 80/90s cinema was no better than movies today. It just happens to be what a lot of people grew up with, and they have lionized it all in their heads and now can't stop beating everyone else over the head with their claims of 'Muh Classics!'