I'm not a fan of my out-of-the-home activities all being stored in an online database accessible to billions of people and automatically scanned by several different governments (including a list of foreign countries extensive enough to include at least one you wish it didn't, regardless of who you are) to build a profile of every person, from hobbies to schedule to gait recognition to psychographic profile.

But of course, that ship has sailed in much of the world, with the ubiquity of surveillance and the dearth of opposition.