Stemming from the Warcraft 2 and 3 days, Blizzard has always portrayed the Orc race as complete and utter morons. Case in point, their Orc warriors and peons, and the rabble the World of Warcraft town npcs and gaurds spout.
It is almost absurd to believe that the Orcs could be Mages, considering the Mage class uses intelligence and whit to destroy their foes. Why were they added as a playable class for the Orcs? Does not make sense.
Orcs may be strong, as to strength and agility, but they sure are dumb. There are a few exceptions, but you may notice that these exceptions almost always involve humans somewhere. For example, Thrall was raised by humans, and therefore they taught him good principles, and taught him to be intelligent.
Why did Blizzard make the Orcs idiotic, bloodthirsty savages? And why allow them to be Mages knowing this in Warcraft lore?