I'll play.
Piggy, there are two tiny doors in the back of my impregnable fortress of Atheism.
In the future, perhaps humans or human/computer hybrids will evolve greater and greater intelligence, and with this, greater and greater powers, to the point where we would become God-like. We could do all the tricks attributed to God, including impressing the **** out of the hominids on Mizar 5. Would we be God, at least to less advanced civilizations?
The universe got started somehow. It's all very well to say that it's meaningless to ask what happened before the Big Bang, because time didn't exist as we know it. But, what got everything started? If this is a complete mystery, doesn't it leave room for a Universe-Maker--about which we can say nothing, but which still fills us with awe?
If the very ground of our being is uncertain, and our future unclear but potentially without limit, doesn't this force us to be agnostic?
Obviously, I don't get from there to going to church on Sunday...I'm just askin', and now I'm gonna eat some bacon...