In the respect that ill-informed emotional argumentation will never get anywhere or sway opinion, then yes they are similar. However, discussion of all three of these topics, even arguments when based in fact and logic, can lead to a greater elucidation of the situation in question and the underlying belief systems of those involved in the discussion. Therefor, I do not believe these ventures are fundamentally pointless. I just think too many people either refuse to be involved in, or are incapable of, an honest and open discussion.