I don't know about you guys, but I love to take the Adam & Eve story literally, although I also believe that even literal, historical events have deep methaphorical meanings. That's how God works, actually. Just look into your own lives. Things do happen to you. It's a history. But if you try to step back and look at it from a broader perspective (and I know it is difficult, since it is your own history), you would agree that it is quite epic. I believe that to look your life as an epic struggle is to understand yourself better and ultimately heal yourself.
LOVE TO STRUGGLE WITH IT
As for looking the Adam & Eve story as a literal, historical account, I love to struggle with exact same issues that you guys brought up in this thread. One of the most obvious is, of course, "Multiply & Replenish" commandment before the fall.
First of all, I found that I wasn't able to reconcile until I decided to think exclusivelly literal. Then I kept asking questions and the looking for clues in the account. Here are the clues that I found important to bring more sense into it, though I am not yet finished with it:
1) "Multiply & Replenish"
2) "Partake not, nevertheless thou shalt choose for thyself"
3) "We will come back and give you further instructions"
4) "You have a world here like unto the world where we used to live"
5) "If thou cursest me for the same thing that has been done in another worlds..."
Now, let me connect dots. Adam & Eve would have remained in the state of innocence and would have not have children had they not partaken. It is seemingly contradictory to No 1) from the above list. But, I believe that No 3), 4) and 5) are the clues. "Further instructions" were coming. That is certain, the instructions were promised before the fall. We can easily deduce, however, that those instructions would have been much more different, had Adam & Eve not partaken.
Now, let's step back for a moment. What were we doing before the Earth was created? We were progressing until the time we were ready for mortal probation. Is it possible that No 4) and perhaps even No 5) from the list above has something to do with it? Obviously, Lucifer was there. I don't believe he lied. True lucifer deals in half truths, like "theeere is nooooo ottther waaaay".
From there, I sketch a picture. I won't put many details, because, you need to use imagination and work it through for yourself. (That's why we don't discuss it outside the temple.)
We did progress before the Earth was created, that's for sure. How did we progress? Perhaps, we might have rehearsed a bit in a form of "other worlds". Rehearsal might have consisted of playing doctors with plastic tools, like children do. But fuses were built in situations. Nothing bad could have happened. As we played, we matured. Our personal traits were developed. Lucifer's included. He obviously liked always to play the doctor.
As we progressed, we might have slipped into the real thing without even noticing that we are not playing with the plastic tools any more. That seems to be the arrangement from the beginning. Fuses were removed from us one by one, until we, including Lucifer, ended up having none. Actually, there is one fuse left indeed, Jesus, but that's the fuse for grown-ups. And not for Lucifer, I'm afraid.