Gee that was pretty trusting of you, HD. I don't know of ANY country on this planet, except Japan, where the same thing would not have occurred.
There are a lot of people with a lot less, who are always on the lookout to improve their lot.
I guess you wouldn't get away with doing what you did in the US for security reasons - try leaving a suitcase on its own and you'd likely find the pax evacuate before you'd made it up the steps - and yourself handcuffed, headbagged and sent to Guantanamo!!