Your comment reminds me of the Bible (cartoonish characters, plenty of action, etc). Took me some 35 years to learn to appreciate it. However, what made me like it has nothing to do with popular notions of the book (I'm compelled by the history behind its several edits and compilations).
Maybe someday I'll like Atlas Shrugged too. I don't know, maybe there's something else there, but I find it unlikely, given that it lacks this more profound historical background. It tries to fake it, and in some sense it wants to be it (some historical allegory people book thingy).