1. Why do you suppose a monotheistic god is so popular these days, as opposed to polytheistic?
2. Do you think a willfully ignorant population that is happy does more harm to a society in the long run or not?
Willfully ignorant... Willfully ignorant implies they know they are wrong, when in fact true Christians definitely have complete faith there is God, and do not think they are wrong in any way.
Now if you took out the "willfully" from your question it would be more of a proper question.
I do like how you said ignorant and not retarded or idiotic though. I give you props on that one.