I have no secrets worth that much effort to keep.
If I were famous or influential in some way, I would have reason to have more security of this type. Since the mid-80's I have just assumed that at any time, someone could be viewing my actions. I am naturally a little paranoid so it is no stretch for me, and I find that a side benefit is that it keeps me more true to myself. I tend not to do things I would not want to admit to the world or my family/friends and try to present myself as accurately as I can, even when alone. This viewpoint also seems to give me a little bit of fortitude when I am tempted to do something I normally wouldn't want to. I find that if I assume I will be held accountable for all of my actions, it helps me think a little before acting more often (impulsive behavior can be a real issue for people with ADD)--, at least with more important, spur-of-the-moment decisions.
On the other hand, I have no desire to live a public life so there is no reason to make things less secure then they need to be! Given my choice, I would prefer to live a little apart from people (i.e. not in a crowded area). After living here in Alaska, I could never go back to living in densely-populated areas like back in Jersey! Here I am surrounded by mountains, forests, and water and no matter where you go, you have a lovely view to look at (well, maybe not the big buildings downtown).
It is funny, I had not really thought too much about this in regards to how I act/think until I started typing this reply.