I asked a vegetarian “why are you a vegetarian?” and he said: In an ideal joy-and-happiness society would we foster empathy, caring and compassion between all people? If people are unempathetic, uncaring and uncompassionate to animals would people also be unempathetic, uncaring and uncompassionate to the human-animal? Thereby destroying joy-and-happiness society? And if so, should we be empathetic, caring and compassionate to all animals?
If farm animals feel pain and suffering, should we be empathetic, caring and compassionate to them too? And stop slaughtering them!