TonusOH:
So we could have had a universe where everyone was always happy and no one ever suffered.
According to The SBL Study Bible, Oxford's Catholic Study Bible, and the JPS Jewish Study Bible, the narrative of Genesis never promises immoratality or eternal life to humans even if they never partake of the fruit of the tree from which God forbids.
"Man seems to have been made mortal" states The SBL Study Bible in its commentary to Genesis chapter 3, pointing to the fact that after his "eyes are opened" that "he will be conscious of his mortality, another addition to his self-knowledge."
There are a set of ironic realities mentioned regarding this via a play on words: Adam renames Woman after his condemnation or curse. Why?
Adam's name in Hebrew is basically the name from which he was formed and where he is told he will return, which is a reminder that he is not immortal (adamah), being told that he was formed "from the dust of the ground."--2:7.
Adam renames his wife "Eve," which means (of all things) "Life." This is ironic as they have been cut off from the Tree of Life. (In Hebrew, the same root word is used for both by the way, as in the Hebrew expression "L-Chaim," meaning "To life!")
The Tree of Life is guarded by "cherubim" and a "flaming sword." It represents, originally, the Holy of Holies in the Hebrew Temple. According to The SBL Study Bible:
The eastern entrance, the cherubim, and the sacred trees suggest an analogy with the Jerusalem temple, which had similar architectural and iconographic features as well as a limitation on access into it.
When the Church Fathers interpreted this story by means of allegory, the narrative to suggest the Fall of Man, the Tree of Life changed from the Holy of Holies to the Cross of Christ. With the 'tearing of the veil in two' at the death of Jesus (Matthew 27:50-51), access to God by means of the Cross was made possible, making eternal life available and turning what would normally be a wooden instrument of death into a "Tree of Life."
While I think it would have been great that nobody would be suffering today, I don't think this mythical text describes the origins of reality. The religious groups that created this work (as their study Bibles prove) do not believe it is historical nor do they describe "God" in anthropomorphic terms as simple as this narrative or in the language of Watchtower theology. They understand the value of looking at this as it was written: myth.
We might learn good lessons from lore like this, even truths perhaps, but not facts.