Paul Elie's essay, "Has Fiction Lost Its Faith?", is a must-read.
From The New York Times:
"This, in short, is how Christian belief figures into literary fiction in
our place and time: as something between a dead language and a
hangover. Forgive me if I exaggerate. But if any patch of our culture
can be said to be post-Christian, it is literature. Half a century after
Flannery O’Connor, Walker Percy, Reynolds Price and John Updike
presented themselves as novelists with what O’Connor called “Christian
convictions,” their would-be successors are thin on the ground."
The Fine Delight--both the website and the forthcoming print volume--is an extended answer to that question. Here's a short response: the complexity and concern is one of definition, a concern endemic to Catholic literature, endemic to Catholic theology and doctrine.
But I am fully thankful that Elie continues to pose this question to wider, often secular, audiences.