I got a fair bit out of this study, though it was mostly from bible flipping to check up on all the passages and half-verses referenced throughout. It was thought provoking- even if I didn't agree with some (many) views within. It seems more to me to be a book of opinion rather than bible, which loses big points. I'd rather read more bible and a few questions or thoughts in a devotional... no a long-winded speach with a few scraps of verses and one final question.
The points it gained was for being thought provoking. It's good to think about our purpose, both in the general "why am i here?" and in the more practical "what should I be doing from day to day and how should I be interacting with people?"