Children who's idea of  what constitutes proper food tend to grow up to be adults who don't know what proper food is who pass their bad habits to the next generation. The Circle of Fat. The harsh truth is that most people simply aren't bright enough have much interest in breaking the cycle. It's also worth noting that most parents are such shit these days that they have no chance against the mighty McDonald's marketing strategy. I mean wtf, they offer toys and a playground and heavily-sugared catsup to boot. Feed them candied food, give them a prize for eating it, and then turn them loose in a play area designed to drive home the idea that McDonald's is a great place for kids! It doesn't help that so many parents are simply overgrown children who also want to eat the crap.