You did not just put your own message from another thread as a reliable source did you?....I think you just tried to do that.....It's like asking why is this pen blue, and you give me a piece of paper written on it "This pen is blue because I said so". Your source of information and the building argument for it is flawed on so many levels that I am not even sure where to start... you are way into deep to be pulled out .....I wish you well 
Sigh I grow so weary of rabid atheist who cannot seem to string a coherent thought together.
Some atheist I respect. I disagree with af_newbie utterly and on just about everything that matters but I respect his intellect and the logic of his thoughts. You not so much.
Let me simplify this for you.
You stated:
it's (Gods) existence is accepted by you as a starting point.
And I replied that you are correct I do accept Gods existence as a starting point.
I do accept the existence of the creator as a starting point.
Then I linked to my prior arguments on why this assumption is reasonable.
An Argument for God
I hope this exercise in basic reading comprehension has proven useful for you.