Of course, why was it referred to as the Tree of Life, if what it contained was the knowledge of good and evil. Because prior to munching on it, their life was supposedly pretty good, and it sounds like the ToE was more the Tree of Mucking Things Up.
Here we have a god who has, out of the kindness of his heart, made everything perfect. But then he plops down something that will ruin it all right into the middle of everything and then he and makes rules against it. For people who had no particular reason to know what a rule was. For people who had no need for reasoning power because everything was already perfect. The only two people in the world needed neither talent or skill, because everything was hunky-dory. And then along comes a big "but", and they don't have the tools to handle it.
We're talking about two people who presumably couldn't even stub their toes because it was so perfect, and they were asked to understand right and wrong without knowing what right and wrong was. Did Adam, when naming the animals, ever have to put up with god saying "Saber-toothed Tiger! What a dumb name, try again, idiot?" I think not. Everything was perfect except for A&E's knowledge of imperfect things, there was a tree put there deliberately to tempt them, and of course, there was the snake, with or without legs, assigned the task of ruining everything for all of time.
I guess if you're gonna have a story with holes, you might as well go all the way. Make everything implausible and then mess it up with something ridiculous, and call it a story. Have an omnipotent god, who can foresee everything, go into surprise mode because he didn't foresee something. Or else he did foresee it, but that was what he wanted because he was bored. Make sure that his reaction is extreme, otherwise it isn't worth telling the story.
Accepting the fall, carte blanche, is no more an intellectual exercise than passing gas, but with fewer benefits. One must leave credulity at the door, questions off the table and curiosity in some other universe. To be a christian, you simply hear the story, shrug you shoulders as you say "Yea, that makes sense." and go about your business, which is apparently to bug the hell out of others in an effort to convert them into sucker mode as well.
And the results? Exactly what a religion would need to justify its own existence. They get to define each and every one of us a sinner, and hence each and every one of us needs to join them in order not to suffer the ignoble infinity in store for those that didn't live long enough to be told, or didn't ever get to hear about, or heard about but dismissed the story, or heard about and laughed. Of course there is some variation amongst believers, so not all of the above apply, and some believers are even sweet enough to think that there isn't actually a hell. But most of the ones I've run in to put credence in the Eden story to one degree or another. Christians are actually pretty nice folks, I guess, because they accept you even though you're a wretch. And a poor wretch at that. Maybe I shouldn't complain.
So it isn't a story of morality. We're all so immoral, as per them, that it shouldn't even be an issue. As born sinners, we have no ability to correctly judge what is and is not moral, no matter how much god tattooed the details on our heart. The only morality they recognize is the good thing it is to give your life to JC. Everything else is fluff.
People who automatically diss every person on the planet and call themselves moral aren't very clear on the concept. People who say that they feel gods love and simultaneously rag on all of the hell bound non-followers aren't self-aware enough to be considered alive, technically. People who belittle and berate every single person on this planet even as they try to aim every one of us at heavens door have no sense of peace, balance, responsibility, caring or understanding. The only empathy they can conjure up is for those few other followers of JC who think exactly the same way they do, and for too often, the only use they are to others is as a bad example.
There is, of course, no real answer to the OP, but there are a lot of made up ones. If we're lucky, someone will show up and give us their version, and brag about how they are the only one who knows these things, because of being open to god and all. Then they will reel off a litany of stupidities justifying their tremendous insights. And we'll be stuck with more pages of long quote blocks and short, squishy responses (as opposed to snappy).
If god wrote anything on my heart, he used an etch-a-sketch and I've shaken the words away. I'm not bad, but there is no writing there telling me to be just like Skeptic or any other theist. And I, for one, am getting tired of being lectured about morality by people who don't actually have any idea what it is.