There are two among many reasons that I subscribe to bibilical accuracy.
1) The most important tenant of Christianity is that Jesus was fully God and fully man, incapable of violating His character, the Law of Moses in the Ten Commandmants and thus could not lie. When Jesus stated in any version of scripture I am aware of, "As it was in the day of Noah they were marrying and giving in marriage and the flood came and swept them all away." Also, He stated, "For by one man sin entered into the world and death through sin."
2) The bible never talks about ice caps regarding the flood but rather forty days of torrential rain and the breaking up of the fountains of the deep which can only refer to enormous underground reservoirs being released as well. One has only to review the hydrological power of water as evidenced by Katrina to grasp that the conbined effects of the rain and reservoirs would easily have changed the entire geography of the early earth.
Jesus leaves skeptics and liberal Christians little room; either His version of history is correct or He is a liar.