The reason that Christian fiction will never die is because truth is eternal. The forms used to express truth may be altered by culture, but the basic “nuts and bolts” of every story are the timeless truths that stay relevant from one generation to another: love, faith, honor, redemption, forgiveness, etc…
Even secular novelists rely on these staples of morality…these elements of a civil society. Most of the time, however, secular novelists are not looking to discover the source of those moral underpinnings. And since they are not seeking to discover that, their readers most likely won’t find them either. At least not in anything more than abstract ideas.
More than just wanting efficiency in the craft of writing, Christian writers hope to honor the God who gave us the truth. We stand upon the Bible, and seek to be faithful. We know our stories are vehicles. But we also know our stories matter on a level beyond this realm. And we know words are not just words…they are powerful tools, entrusted to us by God for the purpose of communicating His redemptive agenda.
Christian fiction will always be relevant because truth will always be relevant.