Because I like watching football. I don't care if they aren't as good as Bama.I don't understand why anyone, alumni aside, would watch Northwestern, Purdue, Indiana, Illinois, Minnesota, Rutgers and Maryland any day or night of the week. This would apply to Kentucky, Missouri and Vanderbilt in the SEC as well.
Bama aren't as good as the Patriots or any other NFL team but I still watch them.
Granted we all probably have a competency threshold that we draw mentally where any team performing beneath that threshold is just no fun to watch. Maybe yours are teams like Rutgers and Maryland. Mine happens to be a majority of high-school football. I love the game but not enough to watch the teams near where I am muddle through a game.