Our family listened to the audiobook and we loved it. Kids were 16, 13, 1, & 7 at the time. It was great food for thought at our house, too. Every family’s standards vary, but our family isn’t really bothered by some references to pop culture or even an occasional swear word. As a reference, our take is… We live in the world, but are not of the world. We would much prefer we encounter things in books or maybe even a movie and we can discuss as opposed to waiting and encountering all such things in real life. One of my favorite quotes –
“Since it is so likely that (children) will meet cruel enemies, let them at least have heard of brave knights and heroic courage. Otherwise you are making their destiny not brighter but darker.” C.S. Lewis