Left Behind's Anti-Christian values?

My initial disagreement regarding Tim LaHaye's Left Behind series has been its apparent premise, that Christ is going to return in an imminent time, and those who are left will either choose Christ and live for him, or they will reject Him, and choose the Antichrist. I disagree with the concept of imminece, and I believe that there are a number of events that MUST occur prior to Christ's return and our joining Him in eternity.

Now, it appears that my assumption in regard to Left Behind's premise has been incorrect. Here I've read a number of pieces that proclaim that Left Behind is essentially saying that these post-rapture Christians will be able to "have their cake and eat it too." A number of instances are cited that present these "Christians" as being able to accept the "mark of the Beast" and denounce Christ, all the while remaining "faithful." If true, then not only is this a promotion of an idea that is completely unbiblical, it is also a slight to every martyr who ever suffered agony and death for their resolve to remain completely faithful to their Lord and Savior.

I am going to look further into this, but if it is true that Tim LaHaye is actually promoting an anti-christian, occultic philosophy, then this will be yet another reason why Left Behind is terribly dangerous reading.