BD's Logical Fallacy Axiom of the Internet: Most the time logical fallacies are misapplied.
I took the link from there to the page on "special pleading". It simply doesn't fit. To risk becoming an example of my own axiom, you may be guilty of the logical fallacy of "if you happen to have a good answer for something and I don't, then yours must be wrong".
To the best of our knowledge:
1) In the physical realm, something can't come from nothing, and
2) The physical universe was created suddenly.
From these then, the only rational assumption is that something outside the physical realm created the physical universe. Believing to know anything more about it, is irrational, granted. But no less irrational than the dismissal of that core part.
p.s. Looking back on this, to assail this you'd have to believe in the possibility that the physical universe doesn't exist in the physical realm.