One of the main reasons is that most Sunday school curricula only teaches disconnected Bible stories. They don't teach how we know the Bible is true, how to defend the faith, and how to answer the skeptical questions of today.
Ken HamThe creation message has matured over the past three decades, as the discernment and understanding of creationist leaders has matured. More and more, the emphasis is on the foundational issue: compromise of Genesis ultimately undermines the gospel itself.
Ken HamWhen I went to high school in Australia, I was exposed to textbooks that outlined evolutionary ideas - such as ape-like creatures turning into people. I recognized the conflict between evolutionary ideas and a literal reading of the book of Genesis.
Ken HamNow, if the book of Genesis is an allegory, then sin is an allegory, the Fall is an allegory and the need for a Savior is an allegory - but if we are all descendants of an allegory, where does that leave us? It destroys the foundation of all Christian doctrine-it destroys the foundation of the gospel.
Ken Ham