Don't a lot of criminals get guns by stealing them from gun owners? If this guy didn't know he had it on him would he have missed it if someone stole his bag?
The only safe gun is a gun locked in a safe. Hell recently a professional military sniper gets shot at a gun range which are supposed to be the safest places to fire a gun!
If you really have the need to own one you should be tested an licensed like you do at the DMV only more testing and more regulations.
Maybe then the dolts who "forget" they are walking around with a deadly weapon would be weeded out.