The twists of logic required to support their positions are unsupportable, and indeed painful to read. I generally regard any position that requires such convoluted logic to be false.
You believe because you believe. That's fine. Faith is faith, and is important to many. Your faith should be able to stand on its own. But don't try mixing faith with logic, it just doesn't work.
So we can't know that God exists? Have you refuted every argument for the existence of God?
I'll leave you with just one argument to refute for now.
We find in nature things that are possible to be and not to be, since they are found to be generated, and to corrupt, and consequently, they are possible to be and not to be. But it is impossible for these always to exist, for that which is possible not to be at some time is not. Therefore, if everything is possible not to be, then at one time there could have been nothing in existence. Now if this were true, even now there would be nothing in existence, because that which does not exist only begins to exist by something already existing. Therefore, if at one time nothing was in existence, it would have been impossible for anything to have begun to exist; and thus even now nothing would be in existence--which is absurd. Therefore, not all beings are merely possible, but there must exist something the existence of which is necessary. But every necessary thing either has its necessity caused by another, or not. Now it is impossible to go on to infinity in necessary things which have their necessity caused by another, as has been already proved in regard to efficient causes. Therefore we cannot but postulate the existence of some being having of itself its own necessity, and not receiving it from another, but rather causing in others their necessity. This all men speak of as God.