Overall I don't know which I enjoy more college or NFL. I love both equally I think. I enjoy the differences. I have more ties to my college team then I do my pro team for a number of reasons. It's closer and cheaper to go the games so I get to see far more OU football games then I do Dallas Cowboys games. Also my state doesn't have a pro team, even though I am a big Dallas Cowboys fan and it's only about a 3 hours drive.
But overall enjoyment of the sports are pretty equal. They offer up different things. Seeing a good college upset or a classic rivalry is great. But so is watching the best of the best at the pro level. Watching Peyton Manning or Adrian Peterson at the top of their game is a thing of beauty.
I get why people can be just a college guy or just a pro guy because they are different. But I love both.