So you'd be completely okay with those who pay you harming you because you weren't being 100% of their customers standards? Fired, suspended, re-educated maybe, but physical harm is over reacting. If someone forgets to give you a tomato, or lettuce on your sandwich do you beat them up? This is childish thinking and I hope that you grow up and learn that not everyone is going to be pleased, and it would be unfair to physically harm someone bad on that displeasure, there are many other opportunities to show that person their wrong doing Edit: Do you beat your kids when they have a hard time doing their homework after you've explained it?