My first job was in a library (shelving books), and I gained a huge appreciation for what they do and what they offer. I suspect a lot of people don't even realize what a good library system makes possible.
In my town, our library buys upwards of 25 copies of major new movies, it might not be available as quickly as Redbox when the demand is high, but it's free. Our libraries have 3D printers that residents can use, and even workspaces intended for startups to be able to work on launching their business from. A huge perk is that any resident can use these resources, regardless of income level, libraries are a huge balancing factor for people who can't afford to buy their own movies and books.
There's access to online rental/streaming of books, music, movies, comics, etc. They even have a program which gets you discounts in various local stores and restaurants from presenting your library card.
As you said, libraries have always been on the forefront of privacy, I recall many a time hearing about how checkout history simply wasn't kept, and how hard libraries fought to avoid disclosing to law enforcement even what materials people currently had checked out. I think their site now does have a feature where you can track history, because it was a really common patron request, but it's distinctly opt-in, you have to want it and actually go in and enable it yourself.