I'm just answering your questions. First you ask for evidence, then you say it doesn't matter. Then why did you demand evidence??
It's up to you to decide if this topic interests you or matters.
It interests me because Genesis is God's word and therefore we should look at Genesis the same way we look at other inspired writings. As Henry Morris points out:
“Visions and revelations of the Lord” normally have to do with prophetic revelations of the future (as in Daniel, Ezekiel, Revelation, etc.). The direct dictation method of inspiration was used mainly for promulgation of specific laws and ordinances (as in the Ten Commandments, the Book of Leviticus, etc.). The Book of Genesis, however, is entirely in the form of narrative records of historical events. Biblical parallels to Genesis are found in such books as Kings, Chronicles, Acts, and so forth. In all of these, the writer either collected previous documents and edited them (e.g., I and II Kings, I and II Chronicles), or else recorded the events which he had either seen himself or had ascertained from others who were witnesses (e.g., Luke, Acts).
If God did give us Genesis the same way he gave us other inspired books, then we should acknowledge the textual evidence he provided.