Additionally to your turtle remark. God or the cause for the universe to begin to exist had no cause so the turtle stops with god saving us from the 'paradox' or problem of infinite regression.
You are peddling religious belief, not science.
You are mandating a beginning for everything, but not your chosen deity--that's the one exception. And for that you have no evidence.
Sorry, that's religious apologetics. And it is not a proof of anything.
(I prefer turtles myself. Its a better story.)
Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.