Yep. I also enjoyed it and have read some pieces from the diaries of Ayn Rand. She wrote, that in the book her phylosophy is described. And she followed it in her daily life, but I was told she finished her days in a kind of sect made from her followers.
So this book is quite questionable on the other side.
http://www.salon.com/2014/04/29/10_insane_things_i_learned_about_the_world_reading_ayn_rands_atlas_shrugged_partner/