I enjoyed it, but sort of jumped around and skimmed through it rather than reading front to back. My Atlas Shrugged reading was like that but even more so, I think I just skipped the first 300-odd pages to try and get to the juicy bits.
In general I like reading these kinds of books for the cognitive dissonance, I can get into the spirit of it and feel the righteous outrage that believers feel, but also simultaneously feel righteous outrage AT the book and its acolytes, so it's like double the righteous outrage pleasure that a normal book gives me. Before Twitter this was all I had.