Larry
I guess each person has his/her own preferences in books. What is fascinating for one may be very boring to another.
What I find is, nowadays, we are overloaded by books/magazines, movies, Internet, etc., that we have to spend a lot of time to sort out what we really want to read or see. Sometimes, it is helpful to get the feedback of someone who has read a "good" book, especially if many have read it and agree that they like it.
Of course, I would not read Harry Potter, just because millions have read and acclaimed it, for the simple reason, as you said, that it is for children ... and I am eons from that period of my life.