I am 63 and have lived at only three addresses except for my army years. Twenty seven years at the last address. We had a huge basement there with plenty of storage and when we moved in 2005 it was to a house with only 200 sf less but a finished basement so no storage room. I found out the hard way that the book collection I have has dwindled in value because so much is on the net that people do not buy books like they once did for reference. Hindsight I should have cashed out the books in the 90s and bought N frame revolvers.