Oh no.. I can understand how that would be disheartening! I lost my wallet (fell out of my sweater) at a movie theatre and didn't realize it until I was already home. I went back and the manager had it, nothing missing, thankfully. I am very grateful to the nice person that turned it in.

Don't let a few bad seeds get you down. They are not worth investing the unhappiness. What goes around will come around for sure.