I was spending some time over in the Religion group (mistake), and go to thinking about what the Buddhist message might be in regard to the question of "faith" and existence:
From a Mahayana Buddhist perspective, the basic critique of a Creator-God usually proceeds along the following lines. Say you assume the existence of an eternal, omniscient, omnipotent, Creator-God. If he were eternal he would be utterly causeless, always existing, creating but never created, an unmoved mover. He would be beyond causation, prior and posterior to it. But if he were in fact beyond causation, he would be unable to himself cause anything, because only beings or objects with causal power can affect other like objects. To exist beyond causality, then, most likely means to not exist at all. Of course, it is possible that a quasi-impotent God could abide outside the realm of human perception, and be granted a sort of "permanent observer" status, viewing the goings-on of the cosmos from afar. (2) I doubt, though, that most believers from within the monotheistic tradition would find this idea of God accurate or desirable. A God who cannot provide wish fulfillment is probably not a God worth worshiping.
I think the last two sentences of that paragraph are too dualistic, and as he states right up front
"Sometimes a cup is just a cup." - I think many there spend too much time there engaging in incorrect thinking, the question shouldn't be what some people think about such questions, or what what can be proved, but what we conceive our existence being and not-being. You are correct in your point, this is not just a Mahayana idea, this is the central idea, the incomprehensibility of
Saṅsāra:
"Long have you (repeatedly) experienced the death of a father... the death of a brother... the death of a sister... the death of a son... the death of a daughter... loss with regard to relatives... loss with regard to wealth... loss with regard to disease. The tears you have shed over loss with regard to disease while transmigrating & wandering this long, long time — crying & weeping from being joined with what is displeasing, being separated from what is pleasing — are greater than the water in the four great oceans.
"Why is that? From an inconstruable beginning. A beginning point is not evident, though beings hindered by ignorance and fettered by craving are transmigrating & wandering on. Long have you thus experienced stress, experienced pain, experienced loss, swelling the cemeteries — enough to become disenchanted with all fabricated things, enough to become dispassionate, enough to be released."
http://www.accesstoinsight.org/tipitaka/sn/sn15/sn15.003.than.html