"Children take energy and time! Wouldn't it be an evolutionary advantage to eat them instead? Eating your children would mean you live longer, so the lack of animals doing that disproves evolution! Duh, I eat poop!"
EDIT: Best answer yet is on page 2: "Having children is hereditary. If your parents had no children you probably will not either."
EDIT: Best answer yet is on page 2: "Having children is hereditary. If your parents had no children you probably will not either."