The lack of understanding of something is not evidence for God. It's evidence of a lack of understanding.
Science is not just there for technology. It's part of what addressing who you are in the universe and understanding your place in the cosmos. Good art, good literature, good music - all of that is for that and science is a part of it.
Metaphysical speculation is independent of the physical validity of the Big Bang itself and is irrelevant to our understanding of it.
Empirical explorations ultimately change our understanding of which questions are important and fruitful and which are not.
