The Adam and Eve story, like the universal flood story and a whole lot of Biblical stories can't be taken as actual, historical events. The Garden of Eden is both a creation myth, and an allegory of a first sexual encounter.Christianity's insistence on seeing Adam and Eve as individual people instead of mankind or the Jewish nation creates all kinds of grief for them. Theist don't seem to care though as their faith does not allow them to think with logic, reason or morality. If it did, they would soon leave their religions.
They are in their religion mostly just to appease their tribal natures and the fellowship it gives. That would be ok if not for the fact that they follow an immoral God.
Regards
DL
Which doesn't prove the non existence of god, or gods. It just shows that the Bible can't be taken literally.