I totally understand your point. But I think you are missing the point of others. Someone bought a pice of cake. The cake was baked, the ingredients were put to use, she didn’t like the cake. There’s no going back from that. She can eat the cake, or throw it away. It’s not like she’s buying the cake weekly and tossing it in the trash after a bite, therefore wasting ingredients weekly. Yes when I cook at home if it doesn’t come out right or I’m just full, of course I’m not throwing away meat or veggies. Also we could argue that continuing to consume large amounts of food even when you aren’t hungry is not going to help any food supply issues in the long run.