Lots of you mentioned the cost of analog photography as being a critical aspect of the appeal (the price tag gives it worth)
— @emily_elsie over passage from Nathan Jurgenson's The Social Photo, "Analog images are seen as slow, pricey, and rare to the degree that social photos appear quick, cheap, and abundant. That an old photo could survive as long as it did grants it an authority that the equivalent digital photo taken today may never achieve."