In response to post #40 I have a few thoughts.
I agree with Mister Emu for the most part but I would like to clarify a few points.
Adam and Eve did not sin any more than a small child would if they picked up a stick and hit another small child, it depends on weather or not they have the mental capacity to make the choice between good and evil. Adam and Eve had no such capacity, they had an understanding of cause and effect but for them the act itself was a simple choice driven by factors we cannot truly understand. Maybe they were in the garden so long (we really do not know how long they were there before eating the forbidden fruit) that they simply got bored and decided to try something new at the behest of Lucifer. The thought of "Why" they should obey the Father and not Lucifer never went further than "he said what He said" and thanks for the information but we'll take it from there. The Father being wise and in authority and Lucifer being an enemy to God was not a concept they understood until after the fact.
We inherited mortality from our first parents and nothing more, our responsibility for their actions goes no further than our responsibility for the actions of anyone else in history including our neighbors.
My second pointy stems from the first. Mankind is not born guilty of sin. To say so implies that we brought the guilt from the presence of God and that is not possible because no unclean thing can dwell in the presence of God or that God is unjust and that also cannot be true. In the pre-existence we had no more mental capacity to know good from evil than did Adam and Eve. Being born into the world by mortal parents carries with it no more guilt than being created into the world as was Adam and Eve. To say that a child is born into the world with guilt attached is to say that Adam and Eve were guilty of sin before they partook of the fruit and were given the ability to commit sin.
The whole thought of "original sin" is blatantly illogical and undermines the love and justice of God. Mankind is prone to committing sin not because they are born evil it is because they are born innocent and allowed to be tempted by the very powerful forces of Evil. This experience of cause and effect serves two very important purposes; first it gives us experience and second it tests or character to see if we have the strength and will to defeat Lucifer, something that God has more than amply armed us with the ability to do but will not force us to do.