I don't know if creepy is the right word, but I get a weird feeling about it. It isn't that I feel like I'm losing my privacy by people seeing things I posted on facebook years ago, it is more that I am not that person anymore - I liked that my facebook profile was a current snapshot of who I am.
I actually enjoyed going through the timeline on my own, reliving some of the memories, and for personal use I think having the timeline available will be really neat to check every couple years or so, but beyond that, I don't know if I want to manage my 'current' image actively enough to keep it open or not.