Maybe you forgot that there is a thing called "Reproduction" And God created man in his image, no animals. Animals are for our use, to be eaten, ridden, companionship, or just for enjoyment. Before Jesus died on the cross, people used to sacrifice lambs to God so their sins would be forgiven. God sent Jesus as the ultimate sacrifice, so we would be washed clean by the shedding of His blood. But if we weren't supposed to use animals, do you think God would have made up omnivorous? To be healthy, we need meat, just read a health book.