The sad part is, visiting a church, I heard this message preached from the pulpit before. I just remember cringing inside.
And I think it even goes back to a non-literal interpretation of Genesis. If you assume Adam isn't literal, and didn't literally make the choice of Knowledge of Good and evil, bringing sin into the world; then logically, this is what you come up with... that we ALL choose the knowledge of good and evil and we ALL fall like Adam did in the "poem". But we know that's not true because....
Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned: (For until the law sin was in the world: but sin is not imputed when there is no law. 14Nevertheless death reigned from Adam to Moses, even over them that had not sinned after the similitude of Adam's transgression, who is the figure of him that was to come.
That's the proof; sin IS the problem, and NOT the knowledge of good and evil. Since man has acquired the knowledge of good and evil, we NEED IT as the schoolmaster to convict us and bring us to Christ, and without it we will die in our sins.
When I was a child, I don't remember craving moral knowledge... or even fruit for that matter. And watching cartoons, I intuitively knew who the "good guys" were and never had to ask anyone who the villain was. The first time someone takes your crayons or something, you immediately get how disruptive stealing is, and why it is bad- you don't need to openly reject God in order to gain that understanding.