I really could have done without the music that the audiobook at had the start and end of each chapter. It's not really a big deal in the long run but I've never listened to an audiobook that has music in it that much.
This book offers a dark view of religion, unsurprising given the subtitle How Religion Poisons Everything. I've read quite a few books about religion, some very anti religion (like Richard Dawkin's The God Delusion) to Karen Armstrong's The Case for God, which focuses on how religion has changed throughout human history and how we don't view it the same way our ancestors did.
The main reason for the negative view is violence. Violence against anyone who doesn't have the same beliefs as you, even if you are both Christian or Muslim. it is impossible to argue that religions have a history of violence: the Inquisition, the Crusades. Those are the two that come to my mind without much thought.
There are other parts of religion discussed aside from the violence done in the name of religion, that's just what stuck out the most after reading this book. I know better than to try to review an audiobook! I hope this review makes at least a little sense.