Actually, at one time, I was considering trying to buy an abandoned fishing resort in Alaska and disappearing.  But two things stopped me.  I thought about what it would take to survive there completely cut off and the chances of disaster striking.  The other thing that stopped me is that I met my wife, got married and immediately started filling the house with kids.  The Alaska bit is still a bit of a dream in the back of my mind, but only that.  Josh