User blog comment:Sakis.N/PAGAN DEITIES/@comment-71.96.0.84-20151125044811/@comment-70.91.92.65-20151125180537

Sacrifices are a type of worship for the Gods, which people must do for them in order to feed on the psychic energy from doing the tributes. When the  gods "do it themselves", it is less of a sacrifice, and more of a meal.