A public library was built to lend books, and it still does that, but its role in a community has quietly expanded well beyond its original brief. It is often one of the few remaining places a person can spend an entire afternoon without being expected to buy anything at all, which is rarer than it used to be.
That lack of a transaction requirement matters more than it sounds. It makes the library one of the last genuinely public indoor spaces available to everyone regardless of income, which is part of why it so often ends up hosting everything from job seekers using a computer to parents at a story session.
Librarians, in turn, have become an unofficial front line for all sorts of everyday needs: helping someone fill out a form, pointing a new arrival toward local services, or simply being a familiar, patient face in a week that has otherwise been short on either.