[cantankerous]

Have you been back to the library as an adult and looked around at what people are doing there? As a child I only ever noticed ragged looking folks at the library, but that's because I was a child. Nowadays I notice all the people on computers. Shoulder surfing them (yeah, yeah) and it looks like a lot of them are taking care of business online that I would normally do at home on my own computer. Finding information, job applications, some gaming, etc. Also the library helps people file their taxes and learn how to interact with local government and vote. This is all on top of the more traditional functions you'd expect at a stereotypical library. I never noticed any of this as a kid, but I definitely notice it as an adult.

You're going to see more homeless people in a library that is located in an area with a lot of homeless people. They can congregate in the library where it's climate controlled and there are bathrooms as well as something to do (books to read). That's pretty common in larger cities.

Some libraries I've frequented also have spaces for hosting public events and also maker spaces for folks who can't afford access to such things on their own. It's really a great thing to see.