Far be it from me to question anything about your life, and that is truly not my intent, but your comment does make me wonder a little what it is you think woul

Far be it from me to question anything about your life, and that is truly not my intent, but your comment does make me wonder a little what it is you think would be depressing about having that information? If it's just that the act of collecting the data seems like a waste of time, I can readily accept that. (That's why I don't do any of it; it seems interesting, but most of the systems seem like they're not transparent enough to the user. Yet.) But if it's that the data itself would be depressing ... The data to me would just be a mirror. If you don't like what you see, and you have the capability of doing something about it, that strikes me as a better solution, in the long run, than just avoiding the mirror. To each their own though. The article does mention someone who decided after doing a lot of personal metrics for a while to stop doing it, and some of the reasons they had for that decision. It's clearly not for everyone.