4: The events are lobsided against nations. There are half a dozen nations that will be in the medal running, which isn't fun to follow. I'm not saying we need parity in the Olympics, but it certainly makes me care a lot less.
2: The events are stupid. Not all of them--some are fine. I think water polo is pretty interesting as a one-off thing, and things like womens' gymnastics or basketball are pretty solid. But then there's ping pong. And "modern pentathalon" consisting of horse riding, archery, running, swimming, and shooting a laser tag rifle (no, really). And "equestrian dressage'--prancing around on horses. As a sport. Enough. At least some stupid ones have been discontinued.
1: I don't care who wins. I suppose I have pride in my nation, but I honestly don't care whether we have the best swimmer on our side. I don't see why it matters. I don't understand why people who aren't normally fans of swimming care either.