Everyone believes in God. It is instinctual. There hasn't ever been a culture without belief in God.
Which god and what do you mean by "culture"?
No you haven't been able to prove to me with evidence that a creator was not responsible for guiding evolution and especially the formation of enantiomers. The Soai reaction is not substantial evidence it just proves that in nature there is an auto catalyst. This is really evidence of guidance rather than chance formation.
It's been proved, just not to you because you've not bothered to learn enough to understand the evidence. The problem is not lack of proof presented to you, it's lack of effort to understand it on your part.