The USA is known for having fewer “hot” burglaries (i.e. with one or more occupants at home) per dwelling per year than most other countries, due to would-be intruders’ fear that the occupants might be packing heat.
However, too ostentatious a show could also signal the presence of a cache of valuable weapons to be plundered at a time when the dwelling is believed to have no occupants. A cheap gun or two in an inexpensive utilitarian holster, with the rest kept well out of sight, should suffice.
Agreed, I have worked hundreds of burglaries during my career and I would say with no reservation less than ten were what would be considered an home invasion.
Most of those were dope/stash houses getting hit by rivals.
I would also add that almost every one of those other residence burgs had no alarm services. One had the phone lines cut prior to the job.
Alarms work. In fact, local, state and federal goverment would be money ahead if they offered a tax rebate or break to offset the cost of service for homeowners.