Reading around, considering mythos, and taking a few little imaginative leaps, I have come to a conclusion:
We are his toys. Cultivated by him, for him.
It is he who keeps Cthulhu and his kin dreaming. He does so, so he may continue to play with us, crouch down and watch us, or just crush us- one. by. one.
The Mythos beings that we are... We see things- plans, pathways, ideas. Things other races do not.... Could that be why the Mi-Go so value our brains?
Currently we have no value within Lovecraft's universe, but- given time- we have the possibility to achieve greatness. Time we do not have, constantly being invaded, and having to deal with corrupt traitors of humans.