If you are talking about some creator of the universe, which could be intelligent, that set the sequence in motion which is our universe, then your argument for that unknowable thing (God if you like) is as credible as any other hypothesis until the reality is proven.
And if God's reality were proven, what is the surety of it supposed to accomplish, I've always wondered. Instead of wondering about the origin and ontology of our universe, we replace that with wondering about the origin and ontology of our universe's creator (whose ontology presumably subsumes ours). And so we start down the road of infinite regress. So again I ask, what is knowledge of a creator supposed to accomplish, philosophically speaking?
(note: I'm aware that the Abrahamic religions deny any origin for God and his ontology is ineffable, but to me that is no answer unless you consider theology to be philosophy, which I don't.)