I am quite a data hoarder, but I take so many screenshots that I'll probably never look at again, and it occurred to me that this might be my generation's "printing emails" thing.
Maybe that's just a me thing. Other than just stuff to try and remember for later, it's usually pretty dumb. Stuff like: items in some online store, images on a search page generally (not downloading anything specific, just snapping a shot from the general view), etc. It's kinda hard to explain, but let's just say out of a set of 70,000 pictures, at least 50,000 are screenshots.