You've provided no new "food for thought" for me.
You're not belittling my statement either----rather you're revealing the weakest "link" in the argument for belief in atheism. Those who believe in God do not make the claim that God has to come from anywhere. He is simply eternally existent, and the ultimate cause for the universe.
Atheism, on the other hand, has nowhere to ultimately turn to to explain how the universe came into being from nothing. Your only resort is to say the universe, or matter, is eternally existent just as we claim God is eternally existent. But, then, that doesn't really work either, when current theories show that the universe had a definite beginning sometime in the very distant past.