I think, Martin, you just demonstrated why it's sometimes a better idea to sit on a response for a bit.

Just because an emotion is "honest" doesn't give it any value in itself. (There are people who are quite honestly racist, for example.) Anger under certain circumstances is an appropriate emotion, and honesty about these things means that we should not camouflage it. But that's a very different from just "throwing crap around", which is not a way of conducting a useful discussion, but merely a way of trying to disrupt it.

What makes a discussion useful, it seems to me, is when those taking part end up with a better understanding of the position held by other people; and also where, perhaps, in the light of this better understanding, some people may have modified their own position.

It isn't about changing politics and world situations. But it isn't about "pure entertainment" either.