Let's talk about what God wanted. God decided to give two people who had no concept of right and wrong the task of not doing something wrong. Which, would require the knowledge of right and wrong, which they not only did not have but was forbidden for having.
Alright, so we've established Adam and Eve have no concept of right and wrong. So, can you blame them? I mean, one supernatural voice says "Listen to me, just take my word for it" and then another one does the same thing. Can you really blame them for eating the fruit when God was piss poor at making sure they were properly equipped to listen?