I guess the away fan is an experience of it's own. Where I was born, there wasn't much of an option as far as a local team goes. The UP in Michigan is so far away from Detroit it isn't even funny. However, we're only a couple hours from Green Bay so a lot are Packers fans (not me, I can't emphasize that enough). I've spent my entire life being an adjunct fan. Baseball is the best I have in that, I like the White Sox and I've been able to make it to several of their games. Even that is 6+ hours away though.
Right now, I'm going to school in the lower peninsula though so I'm closer to the Detroit markets (only a couple hours away). It's bizarre to say the least. It takes extra enthusiasm but, I think most of us have that level of enthusiasm anyway. The fact that we are on a forum posting about these sort of things kind of emphasizes that. That being said, I've considered going for my PhD in the Denver area and the notion of being a hometown fan, where I can actually attend games regularly and not be the 1 vs 10,000 in the crowd, is pretty abstract.