If you don't accept, as a first principle, that there is a difference between the life proper to a man and the one proper to an animal, then we're having this discussion on two completely different sets of premises and, as such, it will be impossible to convince you of the truth of my position. I see no purpose in continuing.
I only hope that, as you mature a little, you'll come to see that your attitude binds you, and those who choose to associate with you, to unhappiness. Man cannot successfully live the life of an animal, any more than an animal can successfully live the life of a plant.