Some people just don't like to be told "No" and keep jamming the conversation with "what if's" and eventual unbridled insults because at the core of their argument is: I want what I want and anyone who disagrees with me is some kind of an "xxxxxxxxist" and obviously stupider than me because I can see clearly they are an "xxxxxxxxist" which disqualifies their arguments. Even if it's an argument with Einstein about relativity. Some are shrewd enough not to go as far as "xxxxxxxxist" so they don't get thrown out of the room.
Social discourse for the 21st century and how to get what you want, influence un-freinding, and make enemies and new BORGettes in cyberspace.