For what it is (a tiny book, or a reasonably long letter), this book just about fits the bill. There's not too much to say about it. It is what it is. I'd already come to most of the same conclusions, but I found the part on abortion & stem cell research very interesting. Some of the statistics are truly terrifying. Reading the book made me realize how different it must be in America (I from Australia). Anyhow, nice & succinct, with a quarter or so of it towards the end being a bit more of an examination of Islam (in the vague context of how religion in general is harmful & how Christians find them as preposterous as atheists typically find both religions). 
 It's not very long, I guess I'd recommend it to any Christian friends. But, you know. Preaching to the choir, etc.