True of any hobby or profession that can kill you. Like: Sailing, racing cars/bikes/snowmobiles/pretty much anything faster than a walk, climbing mountains, not chewing your food properly, mowing the lawn, driving anywhere, diving into a pool, building a house, working with equipment that can kill you, screwing anything that will hold still long enough to get it in, just about any sport, drinking too much alcohol, doing too many drugs, showering/bathing, keeping exotic pets, etc.I can see where eventually your vigilance slips, a moment of in attention and you have an accidental discharge.
I think we all could make a list of at least a hundred things that we all do that could kill either ourselves, or someone else unintentionally. Life is inherently dangerous. One of my favorite movie lines is from Fight Club: "On a long enough timeline, everyone's life expectancy drops to zero". Why so many people are so fixated on firearm injuries or deaths is beyond me.