I think the issue for me is twofold: a) I couldn’t connect with the characters-they felt like Asimov plot devices for carrying the story forward and b) too much emphasis on the time traveling paradox riddle. What I mean by the latter was that watching the movie felt more like trying to solve a Rubik’s cube but through charts and diagrams. I get that some people enjoy that kind of stuff but I prefer having a solid story line. But I watched it a long time ago, maybe I need to rewatch it with fresh eyes.