"The natural way to read is literally."
I don't think that's true at all. And as the article I linked shows, there are lots of things that points to an allegorical reading of the creation story.
So which is it ? Are you trying to argue concerning the origin of the text ? If so, we are done because I have not the time to do so. If this is your tact then the least you can do is admit that you have no basis to read Genesis figuratively other than "I feel like it".