I'd like to see current statistics, one I read years ago showed that the police tracked the burglaries that they solved, in 85% of the cases the thief was in the house being shown everything they wanted to know - how to get in, where the stuff was, and what pets, children, or other obstacles might be in place. All in the six weeks prior to the burglary.
Usually posing as a friend of one of your good friends. Somebody he is trying to impress - with your belongings.
We like our friends, but when it comes to things like this, we need to question their motives. Thus the rule some have that they only display their firearms at a range - where it can't be helped anyway. It does prevent giving away the entire point of secure storage at home. If it's secure, it's out of sight.
Exactly why we no longer use glass display cases for guns, or a window mounted gun rack in our truck. Those were the days - and they were stolen then, too.
The next time someone attends a "gun museum," look closer at what they do - typically a controlled entrance, hardened doors and locks, no windows, alarm system, and the room in usually in the interior with controlled rooms around it.
Goes to, many build a safe room for their own shelter against violent weather (or neighbors) and then use it as the repository for their firearms, supplies, etc. If you offer your house to the neighbors in bad weather (we do, only basement on the block,) then that isn't where you put guns - at least visibly.
They have no need to know, and for most, they wouldn't know enough to be impressed anyway.