Your statement is far too sweeping. My threshold is much lower than yours. Won't cut it for you, Dave. Other peoples testimony may be good enough for me. The strength of one's belief does not make it any more true.
People are often wrong.
Unfortunately, truth is not a democracy, majority does not rule. Think of cults, political leaders, militia movements etc. I am in no way insinuating that your belief in God is detrimental to society, I'm just saying that a world view that doesn't take into account evidence can be dangerous. All of the cults and militas that you mentioned have come and gone but Christianity has remained. I will even allow that other religons persist because of the grains of truth that they contain.