I am not poor and I can easily afford a lot of late fees in my local library. Still, I notice that having late fees makes me want to return books in time, even

I am not poor and I can easily afford a lot of late fees in my local library. Still, I notice that having late fees makes me want to return books in time, even if I didn't finish it. If these weren't in place, I probably would keep the book longer, even (or especially) if it's in-demand one with a long wait list and I didn't finish it in time. I also see from an article that they eliminated fees for not returned ("lost") books which looks like just an open invitation to steal books from the library. Maybe I'm too cynical but I don't think it'd work very well.