I have a friend that has a library of books he doesn’t read. They sit in stacks or on shelves in his basement. He definitely has his favorites which he rereads, but for the most part he has tomes that haven’t been opened in ten years. He’ll gladly lend them out to friends, but they MUST return them. He basically has become a library of sorts, but without the mandatory library card and the no talking rule.
There are certainly books that you should hang on to. For example, personal all-time favorites that you will probably read again; reference books that are not outdated; historic and possibly valuable books should also be kept. You can probably get rid of that paperback copy of The Shining, but don’t throw it away. Take all of your books to a book consignment shop or better yet donate them. Operation Paperback is a non-profit, grassroots program that collects used books and sends them to American troops deployed overseas. The National Book Foundation also has a list of book donation locations. Getting rid of your book clutter can also enlighten others.