Sending a card is still a thing as it has your handwriting (I know, most people can't even write these days) and it is something far more personal than sending an email or an ecard. I feel the same way and also include handwritten cards in packages. The building is ok as I love old buildings and this is a protected one as it's part of history, however, the inside is a different story.
I'm glad I'm not the only one who likes cards :)