One of my favorite things to do is go through old family photo albums of my childhood.
Being able to 'watch' myself grow up is pretty interesting (especially with parental commentary), and I'm thankful my parents took as many pictures as they did of family outings, holidays, and vacations. But you know what I'm afraid of? That my (potential) children won't have stuff like that.
With the advent of digital everything - most of the pictures I take never take a physical form. I have lots of photos, but they're all stored digitally. I don't want to gather the family around a computer screen and click through photos, there's a lot to be said for perusing actual, physical photo albums. Aside from that, technology is progressing so fast these days, are my (potential) children going to have a cd full of .jpegs that their fancy future-computers can't read?
When the time comes, I think I'll buy a photo printer to keep them around the old fashioned way.