I think some fans, in all sports and every team tend to be negative unless the team is clearly the top team in the league. Every season that doesn't end in a title is a waste and people need to lose their jobs. It's just the way some people deal with the ups and downs of season. That doesn't make them less of a fan. They still care about the team. They just let their emotions lead them to a negative place. While I can't see the enjoyment of that, there are enough who do to continue to follow the team they bag on continuously for their entire lives. I also think there are some who use forums like this purely to vent when they get frustrated with their team. That would tend to skew our perception of them.