What is the actual rationale for "gun-free zones" that are not actively enforced with detection?
The type of people overwhelmingly likely to misuse a gun in public...street criminals, mass killers, and low-IQ jerkoffs prone to violent altercations...couldn't care less about a sign or the relatively minor consequences they would face in the unlikely event their gun is discovered before they shoot someone with it.
Literally the only people affected by such laws are good citizens who want to defend against these others. However rigorous or lax a given locale's restrictions are for obtaining a gun or mandating what types of guns are available, once someone has it there is nothing physically preventing them from taking it into a "gun free zone."
If the above logic is incorrect, please explain why. Again, none of this applies to a place where technology or dogs etc. are used to actually enforce the law.