After all, it seems they make you fat:

Adults living with young children eat significantly more fat than grown-ups with no kids at home, a new study shows.
Adults with kids consumed nearly 5 more grams of fat and 1.7 more grams of saturated fat every day, the equivalent of an individual pepperoni pizza a week, Dr. Helena Laroche of the University of Iowa in Iowa City and her colleagues found. Adults living with children younger than 17 also ate more salty snacks, cheese, beef, ice cream, cakes and cookies, pizza, and processed meats like bacon.
Busy schedules and time constraints may be forcing parents to choose more high-fat convenience foods, Laroche and her team suggest in their article in the Journal of the American Board of Family Medicine. Adults with children may also be more likely to keep these foods around the house because they think kids like them.