Please, please ignore all the scientific impossibilities here, that's not what this topic is about.
Let's make the assumption as many Christians do that the Bible is historically accurate. The Noachian flood actually happened a little less than 4,500 years ago after which eight adults stepped off the ark to repopulate the planet.
That means that approximately 60 million lives had been snuffed out, a holocaust by anyone's estimation. As if that isn't horrific enough just think about the babies, toddlers and young children God killed.
He drowned all of them, every single one.
I know I keep banging on about the atrocities of god but I make no apologies for it. There is a sickness at the heart of all three Abrahamic religions that the faithful need to face up to.
I haven't actually asked any questions, I don't think I need to. If you are believer who supports this first holocaust and mass infanticide you already know the questions you should be asking yourself.