This thread is dripping from nostalgia, in a good way.

I wonder how things are going to be in 25 or 50 years, what will today's kids look back with the same kind of devotion and nostalgia.

A lot of things are intangible/immaterial now (for non-geeks/non-hoarders, their inbox, online playlist and photos will likely be gone, they won't have any paper letters or plastic-framed holiday slide photographs or anything like that).