I've put a road kill deer in my trunk, brought it home, strung it up under my deck and butchered it by myself in the night. I will tell you that was far more emotional for me than any shot I've ever taken with a rifle or shotgun.

The butchering can certainly be more emotional that the killing... it might 10 seconds to grab an axe and swing and then at least 30 minutes to cut the skin and pull it off of the body, to cut the body cavity open and to slice out the internal organs. It feels different than say preforming an autopsy in biology lab... you might have this moment as I have where you realize that the story you tell yourself, that you're a killer with a higher purpose, is just that -- a story. It doesn't make the animal you murdered feel any better about the fate it met at your hand. I would guess it is a significantly different feeling in cultures where a large portion of the population kill what they eat. Even here where I live, in rural Pennsylvania, people will often look at you like you're a sociopath if you tell them you killed and skinned and ate any animal other than a deer, and yet, the first day of hunting season there were often many empty chairs in school because dad wanted to take his kid out to celebrate a time honored tradition. Those kids don't often cry when they kill their deer, they often feel an overwhelming sense of pride. And then they pay a processor $50 so that they don't have to do the hard dirty work themselves.