Alternatively, books can be entertainment, and that's fine. This I think is a difference in the types of books read. I generally don't read self help books, my experiences in the past with many of them leaving me uninterested in the genre, and instead tend to mostly read novels, especially sci-fi/fantasy.

It would rather negate the entertainment value, and would feel more like work, if I had to take notes for a book club style experience, though as evidenced by the popularity of book clubs, there's plenty of people who feel different.