I know the Nephalem were made by demons and angels having off spring, but how did this come about? I mean based off the game lore, angels are created from the crystal spire right? the demons are made in the wake of the prime evils foot steps or whatever and the prime evils are remnants of Thathemet or whatever. What I'm getting at is that the angels and demons have no need to procreate as all the key members are essentially eternal with all their respective methods of genereating new hordes for the ranks of the eternal conflict.
So... why do they have genitalia to being with lol!? What do spirit based beings need with em? I know it's a nice plot twist or whatever, but I just keep thinking, why do any of the angels or demons even have the ability to procreate. At least Diablo inhabited the body of a man when he and Adria created Leah so that makes sense in a way. But what are beings with no need to procreate doing with the gear and the will to create something like the Nephalem to being with? :)
Sorry to expose everyone to my twisted mind, but these are things I think about as I hear the story over, and over, and over as I play different classes and different difficulties etc.