It's pure armchair psychology, but this type of project always makes me think about anxiety. Who really needs this level of self observation and control? At the same time, I really enjoy reading about it and I find the window into somebody else's world intriguing.

> Who really needs this level of self observation and control

I liked doing similar things in the past. There's no anxiety in the equation, just pure curiosity. How many times have I done a thing a month/year? I was always curious about stuff like this, much like the OP. There's also the hacker spirit in play - designing the apps for tracking stuff.