Because it's excruciatingly painful to bear for anyone to know that:
1. Your team's Hall of Famer is no longer on your team.
2. He's on a team in direct competition with yours. They will face him twice a year.
3. That team already had a kick ass run game.
They still cheer for their team but they do so wounded already.
The rivalry with the Cowboys dead/dormant? Not amongst fans I'll tell you that. Allow me rekindle the flame: