Unlike some of the other reviewers, i didn't take offence to elements of the book, nor did i find it patronising, and I enjoyed reading it. In fact, it was recommended to me by a friend and I have bought the hard copy for a friend of mine, all three of us childless (will make sense when you read it).
What I did have a problem with though, and the reason it didn't rate more highly, was the Kindle formatting. Very weird things happened to the font size and the page formatting every now and again. I did download it again in case that made any difference but it didn't.
So, read it with an open mind and don't be too sensitive, but DON'T read it in Kindle format as it will drive you around the bend.