Once when one of my students found out I follow baseball, he remarked, surprised, "Huh. I never figured you for a sports fan." And I said, "I'm not a sports fan. I only like baseball."
Here are some reasons I don't like other sports:
Football is too cold. And there are only, like, a dozen games a year. Baseball is summer (warm) and there's a game every day. Every. Day. Sometimes two.
(I mean I'm sure he's a lovely fellow, and he's quite attractive. I just mean his being able to play basketball well is kind of predictable and somewhat less impressive than if, say, I could.)