I've never particularly cared for college sports, of any type. Even when my school was in the tourney a few years ago, I wasn't all that interested.
I prefer pro sports, but I think March Madness has a certain "Lin-ane" following for people that enjoy spectacle and the whole little school, underdog stuff. It's all about that bracket. Which is something I've never cared enough to fill out in my life.
I also think it's (obviously) a yoot appeal thing, since I can remember getting ramped up for Georgetown games back in the Ewing era, even before we were lined up for the Debusschere lottery moment.
As I age, they just start to all look more and more like high schoolers.