Waiting around for a group = boring.
Unable to beat anything that gives experience while soloing = boring.
Unable to get any worthwhile loot (and especially not crystals) from anything that doesn't give experience = boring and FRUSTRATING.
Being told, "You're an RDM, you're useless" (Or, "Why the hell are you playing
THAT class with that race? N00b!") = Well, not boring, but a sure piss-off button...