Wait till they become fully aware of the concept of death and their eventual demise and after that when they invent "spirituality" and conjure up silly rituals

Wait till they become fully aware of the concept of death and their eventual demise and after that when they invent "spirituality" and conjure up silly rituals to distract them away from remembering their fate and the mental stress and anguish that come with it. Monkeys are in for one hell of a ride right there.