First, religions and the existence of God are two different things, just like the existence of the earth and the earth being flat are two different things. Likewise, the existence of religions is no guarantor of God’s existence, nor is there many flaws proof of his non-existence. And unknowns are facts we haven’t discovered or proven yet, much like germ theory, or fanciful ideas which haven’t been debunked, such as the idea that an imbalance of humors was the cause of disease.