There will always be negligent discharges. You just have to put more effort into a 12 lb pull than a 5 lb pull. That means, in some cases, the discharge is less likely. For example, when a police officer was at a school talking to the kids. They were all around him. A five year old reached up and pulled the trigger on his Glock. I know people will say, “He shouldn’t have had a round in the chamber in that environment” blah, blah, blah. But accidents happen. It is possible a heavier pull could have prevented that from happening.
I know MAC tested double action pulls on his children to see if they could pull the trigger in that mode. They could not. He said he had no intention of leaving a loaded gun laying around where a kid could get it, but he also knows humans aren’t perfect and accidents happen.
The man whose G19 was fired by his deteriorating holster may not have had the same problem with a heavy pull. It’s possible.
It is completely fine with me if people want to carry a handgun with no safeties of any form and a 3-lb single-action trigger–appendix carry. If that’s what they like fine. That’s just not me.
Like MAC, I prefer knowing it’s going to take some extra effort to pull that trigger. And “consistent trigger pull” is not an advantage for me personally (opinions vary). I prefer the first heavy pull. I have no idea why, but I am more accurate with the first heavy pull. I prefer the distinct first pull and lighter follow-up pulls.
There is no one right or wrong way. They are all personal preferences. Whichever way someone wants to carry their weapon is fine by me. I’m not saying my way is the right way. It’s just my preferred method.
My only problem with the SIG P320 is that it removed the ability to carry in my preferred manner. I know many others prefer to carry in that manner as well. So they went from a handgun that could accommodate heavy double-action, single-action/no safety, and single-action/w safety to a handgun that does not allow heavy double-action. I’m not saying everyone should carry that way. I’m saying it would nice if people had the option to carry that way.
So I will continue purchasing firearms with decockers and a heavy pull. Others will continue going cocked and locked with a 1911. Others will go with striker-fired polymers with no manual safeties or heavy trigger pulls. That’s fine. I just think it would be nice if the official sidearm of the army allowed all of the options (or at least as many as the M9).