I'm kinda confused by the orcs origins.
As all planets in the universe Draenor too was created by the Titans. But titan creations were all metalic/stone if i'm correct. Azeroth was infested with Old Gods which cursed its inhabitants with Curse of Flesh.
But there were no Old Gods on Draenor. So why the hell orcs, and other races to be exact, are not made from stone/metal? After all titans didnt want corruptions.
I didn't read the chronicles, maybe there is the answer.