If we dont kill animals then they will be over populated ..we kill animals and animal kill others animals to feed themselves and its all natural process. we are not like goats who can only eat and digest grass or like tigers who eat only meat. We can manage to eat, chew and digest both and its not just eating but we use animal skins and bones for different things. Most People dont eat meat not because they care about lives of animals but because of cultural or religious beliefs and some of them dont eat because they have been told this since they were born. Someone else made this decision for you to not eat animals soon after you were born