I'm asking you by what intellectual exercise you conclude that such fairy tale events really happened.
Like Jar, I see no reason to take those ‘fairy tales’ literally. But, if you believe that the biblical god exists, then it doesn’t take an ‘intellectual exercise’ to conclude that god is
capable of any one of those ‘fairy tales’. If you believe god is capable of them it isn’t very much farther to believe that they really
could have happened, and even closer next is that they really
did happen.
Still though, to answer the OP, there is no reason to read the Bible, well at least the Old Testament, literally.