Earlier this year I had to help clean up some of my dad's books after he died. There were about 200 legal books where various relatives said "surely these must be useful to someone" so I spent hours typing a list of titles and authors and dates of publication, so someone still in the business could review them. I doubt a single one of the books was still useful. The rest of the books were obviously even less valuable - outdated travel guides, political rants, dozens of books that had obviously never been read. Overall, a depressing and infuriating experience. The only good part was that there were convenient drop-off boxes for paper recycling near the house so I could do many carloads in one day.