To be frank, I don’t believe the bible fully either and see that huge part of it are most likely written by guys with the same mentality with early church fathers. People hungry for power and need justification for genocide. The idea that the serpent is guilty for enlightening humans simply mirrors how porn are bad for opening human eyes.
Obviously if we know the truth, the truth will set us free. It’ll open our eyes and we will become like politicians, know how right and wrong is truly shaped. Then we’ll have power. Hence, our rulers will do our best to keep us ignorant, and anything that can enlighten us will become an original sin. The story can be interpreted in so many different ways where the snake are actually the good guy. Anyone promoting freedom of speech, freedom of information, are like that snake, and obviously religious leaders hate them alot.
Just check this out http://answers.yahoo.com/question/index?qid=20110603220513AAtKSza