The paper is not blank, it says that the burden of proof is on you and your entire hypothesis is, "if not God, then what?" That is a logical fallacy known as an argument from ignorance, as we've been trying to explain to you, it does not carry any weight, it does not need to be refuted, an alternative does not need to be offered. All that is required to have you carried off the field on your shield, is for your opponent to correctly identify the fact that all you are offering up is an argument from ignorance and for you to have nothing else to offer.
Them's the rules, I did not make them.
Presenting a better alternative is but one way of showing that something else is wrong, you can show that something is wrong without being required to present an alternative that is right.