People don't get worked up over movies, TV shows, or dumb news stories on the internet the way they do about sports. They don't pledge allegiance to a single movie, go out and buy costumes displaying the movie's emblems, or engage in verbal and physical conflict with fans of rival movies.
Well, some do. But we consider those people to be nutcases.
No, the only other things that people get as worked up about as they do sports are nation, religion, and sometimes politics. Which, now i come to think about it, are subjects that are even more ridiculous than sports.