I read Golden Compass some years ago, actually when I read it I would not have described myself as a Christian. I read half the sequel but gave up on it part way through … it didn’t keep my attention. I never considered picking up the third. Life is too short to read bad books. That last hasn’t certainly always been my approach after all, I spent or four days one summer reading all of Edgar Rice Burrough’s Carter/Mars, Tarzan, and Venusian series.
The point is, there are dozens if not hundreds of far better fantasy trilogies and epics. Why pick that one?