Reply #8: A rabbi explained it this way to me, so here goes:

[no_hypocrisy]

Try to equate religion, any religion, with having the ultimate answer to all problems. And being the ultimate answer, everything else is lesser, a mistake, and illegitimate. And further, when nonbelievers do not embrace your religion, you take it personally, you feel rebuffed, and it can go to the point where you feel like your religion is being delegitimized and attacked by the nonsupport.

So, the emotional distress by SOME religionists is rather personally psychological and sometimes the result of being manipulated to go along with the crowd (social psychology). This negative reaction can be conscious or unconscious, but as a nonbeliever, you still have to deal with it and logic is not one of the strongest tools in your box. And there's the rub as it's hard to reach a consensus when you lack the ability to agree.