I think that what is lost is the storytelling that is associated with the slideshows. Now we just seem to presume other people know where we have been or what we are up to.
I remember going overseas fifteen years ago. I borrowed my parents camera. While away I had the images on the SD card transferred to CD. This was not only so I had a backup and could delete a few, but also so that I could share the actual disk with other people I was away with, as they were from a different hemisphere. Times have certainly changed.