The laws of physics don't disappear in the confins of a gun show or gun store. If the gun is not loaded, it won't fire, period. No God or Goddess or Gods are going to magically insert a bullet and cause the gun to fire.
I understand firearm safety, but so long as one understand the laws of physics, and has good mental capabilities, everything will be OK. There are but a handful of times in a person's life where they would need to look down the barrel of a firearm. If they are dumb enough to do that with the gun loaded, bullet chambered, safety off, and a ton of idiots around who may pull the trigger (or have the trigger near things that could depress the trigger), then such is life.
This ^^^^^
Guns don't kill people!