jts wrote:...
When you come down to it, the people who make religious or political debates on the internet unpleasant are stupid cretins, and/or tone-deaf, and/or found obnoxious by the other participants...
I disagree. It is not the people, it is the subject matter. Take a person who will looks like a cretin when politics is mentioned, and start discussing chocolate, and he looks ok. You can say "I like milk chocolate" and he is not offended even though he likes dark chocolate. But if you say "I like Obama", he may feel attacked and behave like a cretin.
Some subjects easily allow for multiple positions in social environments, some do not. I can say "I like milk chocolate" and it does not suggest that you should too, or that there is anything wrong with dark chocolate or with people who like it.
But if someone says that "Christ died for your souls", or "Allah akbar", it is commonly understood that the speaker suggests that the listener should agree with him, and that the speaker thinks that the listener may be misguided, wrong, stupid, or even downright evil if he does not. ( There may be people who can discuss religion impartially, but the common understanding is that they are not impartial. )
Politics and religion are the two subjects about which it is hard to express an opinion without implicitly suggesting that the listener should agree. So we can discuss chocolate on KGS, but not religion or politics.
I find eggplant disgusting. If you like it, I have no problem with that. But if you hold political opinions substantially different from mine, I'll probably think that you are an idiot and/or dangerous.
It is not the people, it is the subject.