Because that is what die-hard fans do for their teams. Every team has at least one die-hard, who becomes an unofficial mascot. We had Dolfan Denny, who died in 2007. He cheered on the Dolphins for over 33 years. You get fans like this for different teams in every sport. There's a guy at all the Cleveland Indians games who beats on his drum all game, whether they're doing good or bad. It's how fans get. They're passionate about their team. It's just that simple. Oakland has such diehard fans, win or lose.