Don't assume that everyone is the same! Have to disagre with you here. Maybe for a civilian that has never had to shoot someone. Making a statement that it is hard to live with is not true for "everyone". I am a former Marine and unfortunately bad guys have to die some times. I can assure you I am highly trained and it doesn't bother me in the least to put some dirtbag to sleep. If he/she is a threat to myself, my family or my country, nite nite!
IS IT EASY FOR EVERYONE, NOPE! dOES IT BOTHER EVERYONE, NOPE. That was my point, not everyone is going to have issues after having to kill someone or something.