My biggest issue is that the bulk of what I've seen on the shelf are Christian romances/Amish novels. It's been ages since I've been in a Christian bookstore, as the one close to us closed, so it may have changed.
Personally, romance novels are boring and predictable and I avoid reading them, except for some that I reviewed. I need something with imagination and creative. I'm a huge SciFi and fantasy fan. There are some good things out there, like Stephen Lawhead, and of course C.S. Lewis. There just isn't enough. One of these days, I need to finish one of my books and get it out there