I've never been an Astros fan, and I'll always be a Rockets, Texans, and Dynamo fan. But when you move, you'll still be in Michigan. I'll be multiple states over. So let's say, I root for the Clippers but don't really become a fan. And I will never root for the Galaxy because fuck them. I have no beef with the Clippers though. As for the Dodgers, I dunno.
There's a line between rooting and being a fan, no?