I cannot comment intelligently on this.  Over the years I've read a couple different explanations... but when the question is "why did God do this or that" I leave it up to the theologians to ponder.  I'm more into how to live my life today.

I'm not saying that to demean someone who does ponder issues like that, it's just that I've never been one that feels pressed to research those "unanswerable" sorts of questions.

You certainly need not apologize 

I love talking all things Christian.  Sometimes I just cannot come up with anything intelligent on some issues

maybe just to give them that option, maybe it was just the right thing to do.  i have experienced in my own upbringing alot of exploration into understanding the personality of God, which often has great value in developing a relationship, and then also sometimes led to misunderstanding, assumptions and unanswerable type questions.  but i think overall it's probably healthy to muse and wonder as long as we realize our limitations.  sometimes i get really mad at Eve for picking that apple, but more than likely I would've done it too given enough time. 
i mean think of it, God may have been just Dad to her.  It's as if he gave them the chance to remain as innocent children totally protected and provided for, and they instead became adults with all that entailed, including reproducing their own children.