That sounds like a fairly postmodern-ish stance, which I don't really subscribe to. To me, some opinions are better than others, and being able to articulate them well, showing where they come from and what they immply, is part of what makes many discussions interesting. I don't assume an opinion is so good that others will understand it immediately so there would be no need talk about it, or that it is a great piece of wisdom that I should study or let others study.
Good discussions can make you see things differently, take a new perspective that you had not fully considered before. If you only make "life statements" and never cordially exchange points of view, you lose a much useful way of changing your own; you risk keeping yourself in a warm sense of certitude, losing precious feedback from other people's insight.