I have really good luck.
On Friday morning, I dropped my wallet as I got out of a cab. I realized it almost immediately, but by the time I got back to that intersection, it was, of course, gone.
Naturally, this ruined my whole day and I was totally bummed out. Little did I know that a good samaritan had already found my wallet, used my MetroCard to take the subway up to my building, and returned it to our doorman.
With all the contents intact. Woo hoo! I don't care what anyone says, New Yorkers are the nicest people in the world.