If you were to log in, you'd be able to get more information on your fellow community member.
I don't agree that this is the best way to view human nature.
I once was strapping my 1 year old into his car seat and forgot my wallet in a shopping cart. I realized it on the way home, and by the time I got back to the parking lot, it was gone. Of course I expected to never see it again. When I returned home, there was already a message on my answering machine from the finder, and directions to his house where I could pick it up.
Life is just one big pleasant surprise when you expect people to steal your stuff.