You're not supposed to talk in a library, so it's explicitly not a social space.
My local library has both quiet areas and social areas, including meeting spaces. There are weekly social events for knitting, second-language practice, seniors, and more.
High school kids go there to work on class projects together, just like I did at the library when I was a teenager.
Of course you are. The stereotype of the librarian saying “which” is decades out of date.