Humans will never be able to prove what came before the Big Bang or the Creator (if you're so inclined). It will forever be unknowable because that would mean that there's an "edge" to the universe with something beyond it that came before the universe. But that doesn't make sense. Or does it? Science has proven that the unverse is expanding, so apparently there is an edge.
If it's expanding, what is it expanding into? That would mean that the universe is essentially a cell with something beyond it. But what could that something be? Another universe? Darkness? A void?
If you think in terms of this, the only explanation that makes sense is that we will never know everything about our universe and it's machinations. No technological advances or theoretical theories can explain why the Big Bang came into existence and what was before the universe.
The Big Bang has essentially been "proven". So this isn't quite as interesting as it could be.
And I'm with AB, if you can tell me WHY it happened, that would make for some interesting and thought-provoking reading. :smt023