I love old homes. I love the details of the architecture and the variety. With the push to build so many homes so far, we really lost that aspect of our history. In Salem, we have a few Dutch colonials, not a lot.
The original purpose of the double doorway was to leave the bottom half closed, which would prevent those pesky cows, chickens, sheep, and goats from coming into your home and eating your couch. Light would then still be able to enter from the open top half of the door.