You are now talking about the washing machine effect, which is not what you were talking about before. You described a photo sharing site as, "a network of tens of millions of people sharing data about their day-to-day life", which is ridiculous. True, washing your clothes a bit faster is not important by itself, but it is if you can read more books or spend more time with your family. I think it would be a tough case to make that using Instagram instead of emailing zipped photo albums like I did in 1995 allows you to accomplish more with your life.