Humans are perfectly capable of surviving on a diet that consists of fruit and vegies. We don't need meat in out diet, you can easily supplement those foods.

Saying that animals are killed more brutality in the wild is not true, the animals will have a free life then suffer a short death. The animals that are killed for meat are tortured from birth. Whether or not they are killed painlessly or not it shouldn't matter. Pigs have a brain capability equal to a 3 year old, and the way pigs are treated disgusts me. So unless killing 3 year olds "painlessly" becomes legal, killing anything painlessly or not is wrong.