And remember that God wanted to prove to Man that he could not rule himself successfully so he decided to let Man give it a run to prove a point. We know that he could have started over with a new pair of Humans but the Angels were looking down and they would also wonder "Could Man have ruled himself successfully?"
So God let's Adam and Eve make a go at it and then when he sees that they may actually be progressing he decides to tamper with the experiment and throws a monkey wrench into it and derails man from progressing.
Now tell me how this is allowing man to rule himself?
Does not compute,..