What do you think is going on in the head of a person that's being rude? Do you think he considers it wise and necessary? No, every time somebody is raging for tiny little thing that could be fixed easily it's because he snapped. And you can't know why did that happen because you know nothing about him IRL. I don't believe any of you, sweet angels, that you have NEVER raged at anyone. So I do not understand what exactly are you trying to achieve here, stating the obvious that it's not "necessary" or "helpful".