A couple of months ago, I was in a restroom at an airport. There were two beautiful (and obviously expensive) silver rings on a folded paper towel that were left on the sink where I was washing my hands. Dumb me. I took the rings to the nearest ticket counter and asked if there was a Lost and Found where the rings could be taken. Guess I should have just kept them, because someone was careless and didn't value them (although one of them was engraved).
Nope. Never in a million years. Had I been the one who left them, I'd have wanted the person who found them to turn them in. I'm old fashioned; I believe in that whole "do unto others as you would have others do unto you" thing.
Even when there's not a camera and millions of people watching.