I believe (not "know", "believe") that the flood story is an allegorical narrative representing the power of God and the potential wrath of God. I believe it was used as a primitive means to get people to listen, understand & fear God.Well, creationists are nuts anyway, so that's cool.
But let's put aside the literal translation of the story. If the flood story is a moral parable, then what kind of morality is it promoting? From what I can see, it says God didn't know the consequences of creating humans the way it did, it decided to destroy all life on Earth (not just humans) except for a pair of each animal and Noah's family. Which means that children, babies, and even fetuses in pregnant women were too evil in the sight of God to survive. Yet after the flood receded, humans became just as bad as before, so all that terrible destruction was for naught anyway. What are we supposed to learn about God from this story of ineffective global genocide?
That is my opinion.