While I’ll vehemently oppose mandating training prior to a gun purchase with unto my dying breath, the truth of the matter is that people do need to learn how to handle a firearm appropriately. More than that, though, they need to practice what they learned. Safe gun handling practices need to become ingrained in each gun owner to the point that you can’t screw it up.
Amateurs practice until they get it right. Professionals practice until they can’t get it wrong.
And a story from my hometown illustrates precisely why that needs to be our attitudes with safe handling practices.