Not selfish at all. Of course Michigan is where my loyalties rest, but I'm simply a fan of college football in general.
In fact, I actually 'enjoy' watching other games, whereas with Michigan games my stomach is in knots and I'm typically counting down the game clock for another W.
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"I don't get sick. I don't observe major holidays. I'm a jackhammer." - Jim Harbaugh & Dwight Schrute