Quote from : Why We Love Dogs, Eat Pigs, and Wear Cows: An Introduction to Carnism: The Belief System That Enables Us to Eat Some Animals and Not Others Book

But why must the system go to such lengths to block our empathy? Why all the psychological acrobatics? The answer is simple: because we care about animals, and we don't want them to suffer. And because we eat them. Our values and behaviors are incongruent, and this incongruence causes us a certain degree of moral discomfort. In order to alleviate this discomfort, we have three choices: we can change our values to match our behaviors, we can change our behaviors to match our values, or we can change our of our behaviors so that they to match our values. It is around this third option that our schema of meat is shaped. As long as we neither value unnecessary animal suffering nor stop eating animals, our schema will distort our perceptions of animals and the meat we eat, so that we feel comfortable enough to consume them. And the system that constructs our schema of meat equips us with the means by which to do this.