I wouldn't kill anyone, even if there were absolutely no repercussions not because I think it's absolutely morally wrong (there are times where I feel murder is the moral choice), but for the same reason as why I don't do it now: I'm lazy. Murder is hard work. First there's the planning, then the stalking, some additional planning, gathering the equipment, catching the victim, incapacitating them, then the murder; which still leaves the body and evidence to dispose of. Even a random murder you need to find someone and have a weapon handy. I don't think anyone is really that much of my time.