Why do NFL fans want the K.C. Chiefs to be losers?

First of all, let me say that I realize the Chiefs have done some stupid things under ex GM Carl Peterson. But he is gone now and a new era is being embarked upon with the aquisition of Scott Pioli at GM. Mr. Pioli has chosen a guy to coach, Todd Haley, who has a pretty stellar, albeit unproven career. Haley is well connected and comes from the school of Parcells. The Chiefs certainly have not had time to put together a run at superbowl this coming season. But is not true that we live in an NFL era where teams come from nowhere to beingthere in 2 years? When I read all the predictions it amazes me to see how people pick the Chiefs to win 3 games this coming season. And that is in the worst division, aside the Chargers, in football. Why do NFL fans hate the chiefs?