Maybe at some point the main characters learn from their mistakes and realise that they are shallow, thoughtless, callous, greedy, ungrateful, vain, hypocritical, and lack morals. Maybe at the end, they are transformed by their experiences. I don't know, as I could not put up with them all the way to the end of the book. I realise that puts me in a bad position to properly judge the book, and really tried to read it to the end, but it just got too much for me. I did manage to get more than three quarters of the way through, despite about the first third being written as if it was actually a summary, rather than a novel. However, even my mild interest in finding out what happened after the main element of the story finally got underway did not stop me groaning in agony at the idea that a supposedly intelligent, business-like woman with nannies, housekeepers, drivers etc. might be having a hard time looking after a schoolchild just because she has to arrange for a meal to be brought into school for her. The husband does not allow her to eat with them as he is a selfish git, but this is presented as only natural, as he has some personal problems. And his businesswoman high-flyer wife tiptoes around trying not to hurt his feelings, yet this is not presented as her being too weak to stand up to him. She is portrayed as being amazed at getting such a great catch. As I say, maybe there is a big turnaround at the end and these vile people all become human, but until then why not at least hint that their behaviour might be bad? Instead it seems as if you are supposed to identify with them in some way. I couldn't. Good luck to those who can.
I bought this as an audiobook, and the reader does a good job of the voices.