Friend of mine who was a Seattle cop for 30 years disagrees with you. In all that time, he never saw a burglar find a hidden gun, but there were many instances of them breaking into and stealing guns that were in safes.
LEO friends who responded to burglary call describe every drawer having been dumped, every piece of furniture knocked over, every cabinet emptied, mattresses removed, and so on.
Well, if one's idea of "hiding" a gun means putting it under your tighty-whities or tube socks in your top dresser drawer, or under the mattress or in a desk drawer, yeah, the casual burglar will likely find it. But, c'mon man (to paraphrase The Big Guy), that's not really hiding anything...
Strangely, most of the cases I'm familiar with (residential burglaries), in which firearms were stolen, guns typically had (1) been
left out in the open, (2) were on a closet shelf, (3) were in a dresser drawer, and (4) OR in a safe or lock box that was either broken into or removed from the home. You'd be surprised how many folks leave handguns out on kitchen counters, coffee tables, credenzas, etc...
In an out in less than 30 minutes? Often depends on whether it was a targeted (criminals obtained knowledge of drugs, guns, cash or other valuable portable items inside the residence) entry or random (crime of opportunity) burglary. If the former, the thieves may have staked out the home, know the victim's patterns and have a plan in case of alarm or canines, in which case they may be willing to spend more time in the house. If the latter, it's in and out in less than five minutes, usually the thieves will first hit up medicine cabinets and nightstands for drugs and maybe a handgun, with quick, cursory looks into the "hiding" places noted above.
I'd like to think that most of us here who admit to staging a firearm or two in the home have taken steps to harden the structure, lessen the chances of a fast break-in through a door or window, and have a routine in which we will have some warning and a bit of time on our side to not get caught in our Lazy Boy recliner wearing only our skivvy shorts and fuzzy slippers before the bad guys confront us.
What I see in threads such as this is that most forum members share the concern to be responsible gunowners and keep their firearms secure, but as always, there are varying schools of thought with regard to our individual comfort level and how we balance our security versus keeping our guns secure.
Have you ever heard the saying "No plan survives first contact with the Enemy"?
I don't plan to make contact with the enemy in my PJs and slippers (or bare feet). As my Coast Guard brothers (and sisters) say: Semper paratus.