I noted you found my question about a fictional character was amusing. You do realize it's true, right? See Luke 3. If Genesis is a literary construct such as an allegory, a historical book (Luke) is saying Jesus is descended from a fictional character. If Genesis is a historical book, there's no problem because both men are real people.
The Almighty didn't fail me. The people—who created their version of what that Almighty is supposed to be—did.
I noted you found my question about a fictional character was amusing
Yes, it was because it sounded like something an atheist would say rather than a Christian. In fact David Silverman of American Atheists said that on FOX News to none other than Bill O', i.e. "you pray to some imaginary man in the sky?", or something straight out of Richard Dawkings' books (i.e. "imaginary friend").
See Luke 3. If Genesis is a literary construct such as an allegory, a historical book (Luke) is saying Jesus is descended from a fictional character. If Genesis is a historical book, there's no problem because both men are real people.
Allegorical reading of the scriptures is not alien to some Jewish sects, such as the Alexandrian diaspora (see Philo of Alexandria). For example, the two somewhat contradicting stories of the Genesis must be read allegorically for that reason alone.
As to how fictional Adam is depends how fictional the Bible is. I know that some people believe it is 110% factual, but I am not one of them. Obviously at some point in the evolutionary process there was a "first" humanoid, but probably not the only one. I seriously doubt he was anything like Adam.
The Bible also says that diseases are caused by "demons". That's about as fictional as it gets, as far as I am concerned. When you get sick, do you look for someone to drive the "demons" out of you, or do you submit to science?
If you do the latter, that's as good as calling the Gospels fictional narratives; it shows lack of belief in biblical explanation of what causes illness.