Yes, I read all my book reviews. I know that there is equal value in both good and bad reviews.
First, why read the good ones? It is very encouraging to read positive things about your work. I like to read a review that indicates the reader has understood what I was trying to say. This serves to reinforce the message for me.
Second, the bad ones. I try to determine if the writer has found a shortcoming in my work that I need to address. Sometimes, the person is just being negative or mean. But when the review is a serious criticism intended to highlight a flaw in my book, I look closely and try to incorporate the suggestions made or have the issue addressed. I am constantly looking for ways to improve. So sometimes, my feelings are hurt, but I am willing to listen and strive to present my experiences in a better way, thanks to the criticism received.