People have always been writing down frivolous stuff. You think the cave paintings were all deep-thinking art? I’d venture not. And I may be biased, because I’m a marketer, but I see such a rich trove of content on social media - news article shares, musings about life, photos documenting different places - that I imagine digital archaeologists will be thrilled to examine it. Surely it has more information that a bunch of tattered diaries.