I could never switch teams. Unless it's a situation like the Colts moving out of Baltimore to me you pick a team when you are 8 and that's your team for life, win or lose. I would never change simply because I lived near a team that was good at the time. That just seems so wrong to me.
In fact I tried a few years ago. The then Redskins were hopeless and with Snyder I know that won't ever change. So I tried to be a Ravens fan, they do it the right way. But my heart just wasn't in it, I could not undo 50 years of allegiance to my team.