Many here like to keep old cars too, you regularly see cars from the 1950s still driving. Older houses like older cars have been tested by survivor bias. Older things stand out a bit too, so it is a way to be individualistic. A way to connect to the past too. Even if it wasn't your ancestors that built a house, learning about the people that did, and living where they lived and died is an interesting experience. In many cases the workmanship is something that could not be repeated given modern labor rates. So lots of little reasons. Also our modern homes don't vary as much as yours, they all look roughly similar. So an old house might be selected just to avoid the current popular design.