Lets see... Ok. How about this: Orcs were created not by a god, but by the very earth itself. The orcs are a symbol of the earths health. Once they were the most beautiful race, Their movement fluid like water, features as naturally compelling as the lush green grass, and eyes as mysterious as the deepest, untouched forests. But as humankind corrupted the lands, using earths resources and leaving wastelands when they razed all they could, the orcs changed in shape. Smooth, soft skin roughened like the toughness of the dried earth that the humans left. Their minds and bodies now moving like the fire that man pushed all throughout the lands. Their eyes are now angrier than the oceans swelling in a hurricane. Orcs are the guardians, so to speak, of the earth. The reason they always seem to ally themselves AGAINST the humans, is because the orcs see the humans as evil. Funny how humans see orcs as the same thing. Humans hate the orcs, thinking they are a blemish on the earth, but ironically, it is the HUMANS that are the blemish!
For every human, the view on orcs are that they are barbaric, non-sophisticated and primitive. In truth, they were the first race ever to grace the earth. They were wrought out of the very elements that the earth made. If ever an orc chose to talk to a human instead of slay him (which is very rare, and based on the compassion for the earth that the human may feel), that human will be awed with the beauty of days past that the orc speaks to him about. Days when the earth was simple, and all was filled with beauty. Days when the orcs themselves were the most beautiful creations, full of wisdom and mystery. The orcs are 'primitive', because they know that technology will only destroy the mother land which they love so much.
Though they have the genitalia, Orcs do not procreate with one another. They do not produce young orcs. But orcish shamans are able to extract elements from the natural earth and create new orcs using the same method the earth did to create the originals. There are still many originals around, and they are usually the chieftans, leaders, shamans and lords of the orc society. Not because they are more powerful, but because they have seen more of life and are wise.
Now, imagine if, in some untouched part of the world, there is a group of orcs who had managed to detatch themselves from the change of the planet by magical means. In ancient times, in the middle of a dense, untravelled forest, some adventurers may find a small community. In this community is a group of some 50 humanoid people, more beautiful than man had ever set eye on before. These people always have a small smile on the edge of their lips, as though they know something that nobody else is ever supposed to know. They are full of mystery and intrigue. So beautiful is everything about them, that the adventurers may want to stay there. And perhaps some do. Perhaps these orcs seduce some of these adventurers. And perhaps from there, is born the elves and the dwarves. Either way, these untouched orcs can divulge secrets known only to the earth herself, should they wish to. They are mysterious people, known to do things for unknown causes. So for one person, they might share half the secrets of the world. For another person, they might tell nothing.
This 'sanctuary', if nothing else, is a good place to get information for a quest.