Ah, yes. Killing and eating. There is a flaw. Being alive, and eating, DOES mean death. Period. From death, life arises. Out of life, death arrives.
When we plow the fields, we take over land that had formerly been (or would return to) a source of food for wild animals. We prevent deer and rabbits from eating our berries and vegetables growing in the ground. When we "humanely" put a fence around our garden, we 1) keep wildlife from eating our food, and 2) keep them from eating the food they would have eaten on that land (the wildlife vegetation that is no longer growing in that spot), and some of the wildlife starve as a result, even when we share and use wildlife borders and corridors. No getting around it -- CARROTS KILL RABBITS when they are used for human food! The rabbit and deer (or human, if you're into protecting the deer and rabbits instead) population adjusts as there are fewer adults to reproduce the following year. If we don't expand our garden plot or farm next year, perhaps none of them dies from starvation. When we shoot or otherwise hunt or trap the deer and rabbits, we eat them (hopefully). When we don't eat wild animals, someone (I don't mind that term at all) else will -- wolves, cougar, etc.
I believe on some level, prey animals accept and understand their life path as including death by being eaten. Sure they fight to survive -- that's also part of the path that we share. Natural selection selects for survival instincts. It's what keeps life LIVING. Humans, in our consciousness, (a wonderful gift we are still learning to grapple with) are the ones who get all confused. WE ARE PART OF THE CYCLE OF LIFE ON PLANET EARTH. We are built as omnivores, and our bodies thrive, generation upon generation, when we see ourselves as part of all life and eat like omnivores.
I love chickens and have some. I love their eggs. I eat their flesh. Both cooked. I love their personalities (though I'm happy they live in their own house). I eat raw fish. I would eat raw meat if I trusted the source and preparation. What if we LOVED what we killed and ate -- all of it? We are stewards in our self awareness of this planet and the life that we are fully part of. I bless my food and all the Life that it takes to keep me alive and healthy, in all the forms that Life takes. When I die, I will be eaten as I remain part of the cycle of life.
Not only does life evolve, but also human culture and consciousness, including religious understanding. Suppose there is a higher understanding than not eating cows....