I've personally come to the conclusion that much of the fantastical stories of the Old Testament are the mythology of the Hebrew/Jewish people. Every ancient culture had mythology. It's how men with primitive technology explained the world around them. The problem is many see literally everything written in the Old Testament as having originated from God himself and must not be questioned. Christians are under the New Testament.
As I've mentioned before if you look at the archeological record, as well as the mythology of other groups, there's evidence that what is now the Black Sea came to be when the Mediterranean broke through a narrow isthmus and flooded the region. There have been ancient villages discovered on the bed of the Black Sea. Furthermore when you look at carbon dating there's simply no way the Earth is 6000-8000 years old. If you've ever been to the Grand Canyon it's pretty obvious that it's much older than that. Dinosaur skeletons are in layers much older than human civilizations and there hasn't to my knowledge ever been any discoveries of human civilization or anything even predating civilization in those layers.
The Christian world is very divided and many don't believe things like dinosaurs and humans existed at the same time. That you think all Christians are this or that indicates to me you aren't familiar with just how divided we are.
Fairly recently there have been discoveries of huge meteor craters in Greenland under the ice that date to about 12,000 B.C. if I remember right. This is about the time of the Younger-Dryas period that occurred between ice ages. Believed to be the cause of the ice age that followed the Younger-Dryas. The Great Lakes are a result of the ice age carving up the land then leaving huge pools of water when the ice age receded. A lot of archeological evidence of huge floods in the Columbia River basin. And in what is modern Turkey there have been numerous sites dating to about 11500 B.C. The most prominent being Gobeki Tepe, a huge temple and dwelling site whose builders used technology far more advanced than the hunter gatherers who were believed to live in the area during that period. Carbon dating makes that site much older than the 6000-8000 years old that many evangelicals believe the Earth to be.
The thing is this is all putting pieces of a huge puzzle together. Those who sincerely believe every story of the Old Testament don't want the puzzle to be examined. Any questioning of the legitimacy of their beliefs gets them pretty upset.