It was worth hiking all around the Tate Modern to see something I didn't know existed: "The Backs" by Henri Matisse. These are four larger than life blocks of dark wood carved into the shape of women's backs. Awesome.
There was a sculpture called "looking into the corner" or something like that, of bald men looking at the corner of the room and laughing. I laughed. There was another with an old VW bus and sleds trailing out the back. I laughed. I frequently laugh in museums but find myself to be the only one laughing.
I urge you when viewing art to read about it in advance, to make your information gathering not part of your direct viewing experience. You should be there to take in the picture. Listening to someone else talk about it means you are seeing what they see and not your own thoughts and feelings.