...There's more to movies than just the story - it's a bit like Italian opera; many of those are still worthwhile listening to even though the stories are invariably tacky and beaten to death. (I was about to mention Wagner, but let's face it, he was original in terms of the story content as well!) Or the umpteenth Madonna with Child; we know that story by now, and yet, Raphaël's renditions remain compelling masterpieces. It's similar with movies, where there's artistry to be enjoyed in e.g. photography. Try to see it as a 'gesamtkunstwerk' and it makes a whole lot more sense. You don't read a novel only for the narrative, either, right? It's also about the author's use of language, their ability to conjure up lifelike characters, etc.
Sorry about the preaching; if you don't like movies, that's perfectly fine. To each their own.