The Vegan Rationale
Based on the depth of character in complex mammals like cows and pigs, it is actually less cruel to eat chickens. Although, even fish have feelings. This is why vegans are the most ethical eaters.
Think about it, wasps can distinguish each and every other wasp by the sight of their faces — just like we do. In sharp contrast to this, there isn’t anything that it is like at all to be a fruit or vegetable. Quality of life is only an issue for animals with brains. This is precisely why it is immoral to eat the flesh of any creature that contains nervous tissue.
Granted it is completely natural to be an omnivore. We evolved to eat both plants and animals. The thing is that we should artificially select for a vegetarian diet. We can decide to be herbivores, so we should. Shouldn’t we?