There is a kind of "herd immunity" that prevails in places where legal gun ownership in the general population is presumed to be high.  If you happened to be a career criminal inclined towards robbery or burglary, then where would you prefer to practice your trade - a community where visible gun racks are the norm in many pickup trucks or SUVs - or a place that expressly forbids or discourages legal firearms ownership by private citizens?  A reluctance to prey on random citizens or break into random homes likely occurs more in the former than the latter.  After all, not all criminals are totally stupid or without fear of being hurt.

This is why non-gun people may actually reap a benefit because of their gun owning neighbors.  And no, a concealed carry friendly state is not even necessary for this to happen.

If there is anyone who questions this, then ask yourself, when was the last time you heard of a police station being burglarized or all its officers assaulted, raped or murdered?