Okay, let's go along with the Flood story for a moment, to the point where Noah exits the Ark.
Here we have Noah, with two of each animal and seven of the clean animals; maybe a few dozen animals that were not essential to the future survival of the species.
What does god do?
Tells Noah he can eat animals now.
Are you telling me an all-wise, all-knowing god isn't capable of better planning than that? Which strikes you as more likely? That god is a malicious sod, or that god isn't very good at planning things, or that the story in the Bible was made up by someone?