Why do you not believe in God?

[Ryantology]

The old argument for evil has been debunked. But there is a stronger version of the argument, which I presented here, and to be honest, I don't know how to refute it. It seems logically valid and every premise seems true. But the truth of it is not decisive like a mathematical proof. It does appeal to our ignorance, and says since we don't know an explanation for x and y and z given a benevolent creator exists, then there is none. So it's not cold hard proof, but it does seem that each premise is true as far as we can see although it's unproven. The more we exhaust all possible explanations, the more it seems the problem of evil is unsolvable and a proof that God doesn't exist.

I don't offer it in an attempt to prove a negative, rather to refute your assertion of a positive, which you offered as the conclusion of your argument.

So if you deny God exists on this basis, I would say this gives a moral face to Strong Atheism.

It's perhaps most accurate to say that I consider God to be so unlikely that it is not worth considering God in any way other than philosophically. God is just one of virtually infinite possible explanations for the existence of the universe, to me of no more importance or likelihood than any other you can come up with. Concepts of greatness and/or morality have no part in it, I only mention them because you framed the debate in those terms.