If humanity evolved from lesser animals, then at the point of knowing what we should do, but choosing not to do it. If there was no Adam and Eve at all, then I suppose God could have revealed himself to us as soon as we became capable of knowing him, by seeking him out.
God would not have made it so... that we did wrong instead of right. We would have made it so.
(as a theory)
Off that question for a moment:
There is another biblical theory as well for how sin entered the world even without Adam and Eve being literal... and that is that the 'enemy' planted weeds among the wheat. As in the parable that Christ spoke, when the 'tenants' in that parable asked where the weeds came from, if the farmer planted only good seed. I think that this might have been referring to something else, but Christ also referred to some who listened to their Father, Satan. Since Satan was involved in the whole Adam/Eve fiasco, it doesn't seem like that big of a stretch to me. At least to consider as another alternative to the whole 'deck' falling apart.
I haven't even told everyone what I believe about the Adam/Eve story - although I may have mentioned it in other threads. But I don't think it should matter. There is nothing special about me, and my view is just one of many. But I can see other alternatives. I can think of things other than what some or even many denominations teach. I guess I was hoping that some of you could see that too; that the message of Christ is not based on Adam and Eve being literal. Some doctrine or theory might fall apart, such as restitution or substitution theology, but the message of Christianity - which should be Christ and what He came to do for US - does not.
Peace,
Tammy