It's not porn that the Christians have a problem with, it's the lust. If you watch porn lustfully and without remorse, then yes, you're doing something that "Jesus wouldn't want you to do".
However, if you're watching porn because you feel it is "art" and watch it like you would a normal movie or for a class (believe me, some colleges offer classes involving porn), then I suppose you're in good shape.
So, really, the issue here isn't whether or not you're watching porn. It's how you react to the porn and how it effects you as a person.