I cannot explain how anyone can be a Dallas fan...or an Eagles or Redskins fan.
I can explain that I have visited California...and think it is one of the most beautiful places on the planet. So...I kinda root for California teams when local teams are in the cellar.
Oh, there are times it is MUCH worse than that.
Of course, there have been years recently when it has been lots of fun...like the one when Manning and Big Blue beat the Patriots twice to win the Lombardi Trophy.
Can't get over rooting for a team supposedly from New York that plays in a land full in New Jersey, least the organization isn't as screwed up as the Knicks