I agree; sort of.
Morality need not be a duality, but if it is not then it becomes a nonsense, As Joseph suggested, and I think you would agree, a prudent action might be considered a moral action. I have no problem with tis viewpoint. But prudence implies an intention, and again I have no problem. But if my intentions are in opposition to society's or perhaps yours and I act on my intentions in a way I consider prudent, am I being moral?
I too like Genesis 3 ... especially 3:22, arguably the second most useful verse in the Bible.
To get back into the Garden of Eden we could stop thinking in terms of good and evil.