From a psychologists point of view, getting as worked up as some people do on the forums about a video game is a personal and social problem. Sure it is good to be passionate about something, but there comes a certain point where the behaviour is pathetic and becomes a product of addiction.
Essentially people the reason get so fired up on here sometimes is because this game, or MMO's in general have become all encompassing in terms of their lives. There is nothing wrong with spending most of your time on a video game, but there's always that point where it starts to have negative connotations towards an individual.
It's all about maintaining a laid back, open-minded attitude while looking at the bigger picture.