In the early ages, I believe not much thought was given to what man is and what his real functions should be, and what is the real purpose of his life.
I do not want to go into its physical reasons: the construction of the human body is different from that of carnivorous animals. But man`s intelligence is such that it can be utilised to defend any-thing he does, whether right or wrong.
I do not say that one who is vegetarian is full of compassion and one who is not, is otherwise. We sometimes find people, who are vegetarians, are very bad people.