There's too many casual fans at the club that don't really care; it's just an afternoon out.
The people in front of me in SK3 have season tickets but without fail at every game they turn up 5/10 after KO, go down 5/10 minutes before half time then come back up 5/10 minutes after half time, before leaving 5/10 minutes before the end of the game. The time they are at their seat they're just chatting and not really paying attention to the game.
Of course people are entitled to whatever they want but it's the people like that who contribute to the poor atmosphere.