I was like this with 2001: A Space Odessy. I love Kubrick, I love sci-fi, I even like art that may require a change in perspective/that is more abstract and I'm an old movie buff. Yet Space Odessy wasn't for me for some reason. It's long, streched-out and has some scenes you wish would already end by the second minute, yet they last for 20. I liked the surreal bits a lot but for the almost 3 hours it took to watch it I really can't say I was entertained.
I ended up watching Interstellar later and while it's far from Space Odessy in artistic value I ended up feeling that was more like the movie I wanted Space Odessy to be. Obviously they are not very similar but it had some concepts that without watching I hoped Kubrick already figured out for some reason.