Our colleage at the neighbor branch----
The other day I was weeding in the 900s (a notoriously underused section, except for state reports and travel planning). A little old lady watched me load books onto a cart, take them to the back room, then bring them (well, most of them, anyway) back and return them to the shelf. After several loads, she finally asked me what I was doing. If I've learned anything in my years of working in a public library, it's not to answer this question truthfully (throwing away books!) because you never know how people will react. So I said "I'm checking to see which books need to be repaired or replaced." She sighed and said "Oh, you are SO sweet to think of that!"