I know what you mean when you talk about your kids wasting food, My 3 year old son waste everything, he barely eats but always wants more snacks and new foods and will throw a huge fit and cry and make me feel bad so i will give him something he wants and if i dont, I know my parents or friends will, since he hardly ever eats for me I always try to give him whatever food he wants but almost everything is wasted and I myself dont have much money so it sucks.