I didn’t get that tone, so I generally found the book to be entertaining. I am still chewing through it, though.

I have not read anything more from an anteopological perspective, but I have to say that I have found other works of ethical philosophy and, curiosly enough, neuroscience, to reach similar high-level conclusions from a different perspective. Heck, even bell hooks, All About Love, comes to mind. However, I imagine that this is not what you had in mind and I might be biased in how I want to see the picture painted.