Although it is true I only need to feed once a month to control myself, illusionists were not designed to live such a life. Even feeding twice a week, there is a constant hunger that never truly goes away.

Were I to refrain from feeding for too long, the hunger becomes most unbearable to the point of insanity. Although I will not starve to the point of death without souls, the peaceful creature you are speaking to would cease to exist. I would become, for lack of a better word, a true monster incapable of understanding right and wrong.