Me neither.
I decided it was time to deliver the truth about this game to all the god damn WoD and MoP babies already.
Look at this Graph carefully first. As you can see WOW was at its most popular during Wrath of the lich king. Now lets see about that huge amount of skills that brought all those nerds to the yards.
http://www.warcraftmovies.com/movieview.php?id=105151
http://www.warcraftmovies.com/movieview.php?id=121407
So yeah, go pruning go.