Oh dear. Well, there goes any hope of name calling, hair pulling or other ungentlemanly behavior. (Or unladylike, I don't know the actual gender of the folks involved.) So, then, what can we actually take from all of this? Well, here are my own incredibly long winded 'point/counterpoint' thoughts.
Well, to be completely fair and honest, I have had a lot of the same problems with rogues Mirshalak mentions. While I don't believe that the entire class is sociopathic or full of people who can't work with a group, I have several stories stored up from my time playing WoW of rogues who decided to wipe the group and vanish because they didn't get a drop they wanted (not that someone else did get it, just because the boss did not drop the item, mind you) or rogues deciding to try and train bosses over the hunter who has feigned death to hopefully use his jumper cables to res a few healers in order to help prevent a reset wipe.