Nash, you're doing it too.. the reason no one thoroughly argues here, is that they don't want to. Nor do they want to get in the other arguers' shoes, to ensure they understand what those other participants' point of view really is.
It's a lot easier to see and react to what you want to see and react to, or are used to, anyway, rather than thoroughly replace everything that composes your own point of view with someone or something else's, for the duration of the argument.