Earlier quoted context omitted.
Right. Especially mass-market paperback fiction and the like. If the book is rare, or has deep sentimental value, keep it or pass it on to someone who will enjoy it. But "because I may read it (or read it again) someday" is not a good reason to keep them. And not every book needs to be donated or resold. If you don't want it, chances are very few others want it either.
> If you don't want it, chances are very few others want it either. I don't think this is a good benchmark at all. It's a natural human tendency to think that we each are representative of "most people", but that's very often not actually true. I prefer to donate unwanted books to the library, thrift shop, or used book store. Those organizations are in a better place to judge what most people want and what they don't…
Lisp in Small Pieces. Sure, here on HN many people would be interested in it. In a smallish town, even though there's a technical branch of a nearby university? Forget about it.
English books? The library isn't interested (for good reason, they have limited shelf-space and very little demand for English books, there are two shelfs of English fiction and that's it).
And even university libraries. I once asked them to buy Compiling with Continuations by Apple. A real classic. No, they won't. Too old, they won't spend money on that. Especially since it's available in several libraries throughout Germany. I am certain they would have zero interest in most of the computer science and programming books on my shelf.