I'm not in any way criticizing or making fun of people who don't watch, for whatever reason they choose not to watch. But there's a difference between "I don't watch" and "No one cares." The NFL has never been more popular than it is right now, and it dwarfs everything else. Until this year's SB, do you know what the most watched show ever was? Last year's SB.

Not a huge difference in fandom by age group either, though there is a little between younger/older vs. middle age.