But yet, if you don't read outside your comfort zone, how do you grow and appreciate what others have written?
Do I review books I don't like? Not necessarily. If it is a book that made me uncomfortable, I will probably review it, because it created a feeling in me that made me have to discuss the book with others. If it's just a book I thought was badly written, or had no plot: well, usually I won't review it. I guess I still want to be nice. There are plenty of books I've enjoyed but not raved about, and many that I haven't reviewed. Mostly this is because of time constraints and not because I didn't like the book.
Here's my question (s): Do you still tell people about a book you didn't like? Do you tell them why you didn't like it, and steer them away from it? I will be honest with a customer at our store, and tell them if I liked or didn't like a book and why. It is up to them to decide if it's to their taste. My job is to put a book in a customer's hands, whether I read the book or not and whether I like the book or hate the subject matter. No judgements on what people read ever.
All I can say is that I would be honest with my review and the author. It's hard not to take a bad review personally, because that book was a lot of hard work to write, and get published. I understand. But like all art, some people will enjoy it, and some won't. Isn't is a great thing that we don't all have to like the same stuff? That we have choices? And really, who says we have to be a professional writer or reviewer to express our opinion? You're a reader. That qualifies you to express your opinion.