> I can't see how anybody who has faith could be upset about it, though; to be upset about it, it seems to me you would have to have doubts yourself, and fear that discussion might turn up more facts that would cause you even more doubt.

If the only motive you can attribute to your ideological opponents is one that confirms your views and would be embarrassing to them (e.g., “religious people don’t actually believe what they say they believe”), it is worth considering the possibility that you haven’t actually made a sincere effort to understand their views.