Now consider the organizations that treated God's existence as unlikely. What did they end up doing?
It is better to believe that every sentence, word and typographical error in the Bible is true than to believe all of it is wrong.
No, ICR treasts God's existence as fact and starts with the view that all things were created and made by God in the literal six days of the creation week.
Those are not the only possibilities. Personally, I think some parts of the Bible are true, and some are metaphor -- those are the parts that are explicitly said to be so (dreams, parables, poetry, etc.), and the parts that don't jibe with the physical world that we observe.