My Jaded Response To More Philosophical Disproofs of God

I received a message from Brian Holly on Facebook, asking me what I thought of two philosophical disproofs of God:
I’d like to present you with two arguments I believe are original - at least I have never seen them anywhere. First, an argument against the possibility of an omniscient being: An omniscient being must know all facts, and that must include the fact that he is omniscient, but he can’t know that he’s omniscient, because he has no way of eliminating the possibility that there is some fact unknown to him.

Second argument: if an omniscient, omnibenevolent God creates any world, he must create all possible worlds. Supposing, a la Leibniz, that God’s goodness requires him to create the best of all possible worlds. To do that, he must survey all the possible worlds. Now, consider, God’s knowledge of each of these worlds must be perfect and complete, down to every last wiggle of every last subatomic particle. But then it seems that there is no discernible difference between God’s perfect idea of a given possible world and that world as it would be if instantiated. So there is no difference between God’s thinking of a world and creating it. Gosh, isn’t metaphysics fun?
My Response: At this stage in my intellectual journey, I find these types of philosophical arguments to be nothing more than playing games that can only benefit Christian apologetics. See this paper instead: Does God Exist? A Definitive Biblical Case. [See Tags below for more].