They don't want their food to be too ugly. Ugly means there's something wrong with it, and if there's something wrong with it, they won't want to eat it. It's w

They don't want their food to be too ugly. Ugly means there's something wrong with it, and if there's something wrong with it, they won't want to eat it. It's why most people gag when they think about eating bugs, because they've associated them with disease. They want their food to look good enough to know it's safe, but not cute enough to trigger nurturing instincts.