Why does horde always accuse alliance of being 14yo kids, and vice versa? I'm sure the demographics of both factions are about equal :P.

Personally, I rolled Alliance because almost none of the females in my guild wanted to play Horde. A few were willing to roll as undead, but the general aesthetics didn't appeal to them. We have a strict 18+ requirement, and the majority of our members are late 20's and older. That post saying that PvP servers tend to have more dense horde population makes sense to me, I think it's about what type of game you prefer and not age. I love farming while watching a movie, relaxing gathering herbs, etc. I can't stand PvP servers.