I think I know what you mean by "textual accounts", so let me just say that most of the allegories and metaphors found in scripture tend to be depicted as real events.
This issue bugged the early church in regards to Jesus's parables in that some felt that these were real events and some felt that these were myths composed by Jesus to teach lessons. The church eventually decided that it really didn't make a difference one way or the other, and this is the same approach that I and most Christian and Jewish theologians take with the creation accounts at least. The importance is not whether the creation happened as penned but what are the lessons taught within, and there are a fair number of them, and many tend to not focus on these points instead, thus overlook them.
The Jewish authors of the scriptures operated from an ancient Asian paradigm whereas the important question was not so much "Did this really happen?" as "What are the authors trying to tell us?", and it's this latter question that's far more important because it gives us moral and values to live by.
A good rule of thumb for the parables--if a name is given, it's a real story, if no names are shared, it's an allegorical story.
The importance is not whether the creation happened as penned
That is of tremendous importance, actually. We must be willing to forego a little embarrassment at digressing with many in the scientific community when we talk about creation--not for the young Earth--but for Evolution v. Creation.
The Jewish authors of the scriptures operated from an ancient Asian paradigm whereas the important question was not so much "Did this really happen?" as "What are the authors trying to tell us?"
I ask where you came by this knowledge, for several reasons:
1. The writers certainly wrote as if each thing was a real happening.
2. The Tanakh prophets and Jesus and the apostles based their doctrines on real Creation and other stories, "Just as Moses X, so now God wants you to X".
3. The Tanakh says thousands of times, "Hear now the Word of the Lord." The apocrypha, Christian and inter-testamental both, the Talmud, etc. do not say even once, "This is the Word of the Lord."
4. The Jewish scripture authors of the Tanakh, let alone the New Covenant scriptures, number in the dozens, and across more than 1,000 years. I find it hard to image they ALL committed to writing allegories only without ever having expressed this verbatim in their writings.
5. We need to be on guard against our own presentism. Scholars have demonstrated that the Tanakh aligns fully with the documents of its day that were purported histories in the ANE. For example, countless commentators have noticed the nature of the suzerain and kingly treaties in the apocrypha. Abraham's sacrifice of animals before God reveals Himself to Abraham, is conducted exactly as a king and subjects would treat in the ANE.
6. I believe God wrote the Bible with two facets--literal truth revealed to His adherents; simultaneously confusing to the uninitiated. This apologetic sounds like fluff to the scoffer--and the Bible says "scoffers scoff at God's Word"--however, both testaments speak of this movement of mind and soul.
7. Example--"To the law and to the testimony! If they speak not according to this word, they have no light in them!" -- Y'shua is the light of the world, and the law of Moses contains the creation account.
8. How do you know what and when? Should I keep kashrut because the kosher laws are literal but anything goes as far as creation? Should I "live and die by" the law of Moses but trivialize Genesis, which Moses wrote, as a bunch of allegories?
These are some of the reasons I trust the Bible as literal, particularly where it is using prose rather than poetry.