As Don Juan put it in Castaneda’s final book, The Active Side of Infinity, we are like humaneros, raised like livestock on a farm to be exploited.
Remember also The Matrix series of films. Morpheus shows Neo the shocking truth that we are raised as a food source for the Controllers. He shows Neo a symbol of the battery. While this is a good symbol, a battery implies a storage of energy.
In actuality, we act as generators of energy for the Archons, so a generator you see at a construction site might be a more accurate symbol.