If you don't need to kill animals to survive, killing animals is imbalanced violence for treats. Weaponry has gotten advanced and we've become numerous and efficient killers. If people want the cat-like thrill of precision-shot killing, they should try target practice, laser tag, or one of the thousands of FPS games out there. In the end it seems to come down to this idea of "it's not as personally significant/fun if I can't feel the kill/taste the body" outweighing both harming/slaying an animal and making yourself a killer. It's encouraged. Just doesn't sit right.