I don't get it. At first, I think many assumed the reason worgen and goblins were not given monks as a class, was because they intended to update all the vanilla and tbc models, and as worgen/goblins were not needing an update, they were left aside.
But now seeing how all they did was update the vanilla races with monk animations and not an updated model, what this shows is they weren't intending to release monk animations to tie in with updated models at this time.
So, there is no lore reason why monks/goblins can't be, and I find myself really disappointed at not getting to play a worgen monk.
Did they ever give a spoken reason for this?