It's a common misconception that libraries are just stacks of books. Libraries are about connecting people to information and resources. How people access information changes. These days a ton of information is online - more than any one library could hold - and having access to those resources - whether to look something up on Wikipedia or to apply for a job - is a core part of the duty of libraries.

Libraries have books, magazine, journal subscriptions, children's books, music, movies, art. They host clubs, they host discussions or community events, they help people find all sorts of information.