I have read all of the books except the prequel, and I very much enjoyed them. As a Christian, they moved me to tears at some points as well as challenged me in my daily walk with the Lord. They are indeed fictional in terms of characters and certain events, but I personally felt that the authors kept in line with the prophecies of Revelation. They obviously wrote in terms of their own interpretation of the Scriptures, but their opinions are largely in line with mainstream fundamentalist beliefs about the end times.
Aimeedyan, I certainly respect your opinion, but I have to be honest. I am a bit hurt/offended by your comments that implied that if a person studied theology/history more, then they might not see Revelation in the same light. I believe in a more literal interpretation of the book, you do not. Neither viewpoint is a result of lack of knowledge, just of different understanding/interpretation of the same information. And for what its worth, many, many churches across the country preach a more literal interpretation of Revelation, so its not as out of line with theology as you state. It just depends on which theology you select as to whether its in or out of line with the doctrine. As ncgolfer mentioned, the Bible refers to the concept of the Rapture, though not using that exact term. Many people, including myself, do not believe it is a scare tactic, but rather believe it as a truth of Scripture.