The ONLY reason a gun has a safety is to keep the weapon from discharging when the trigger IS NOT pulled. Period. Any revolver goes BANG when the trigger is pulled, just like a Glock. The Glock has three safeties, all disengage when the trigger is pulled, if the trigger is not pulled, the Glock doesn't go bang, and I've never heard of a Glock firing unless the trigger is pulled. I would suggest that if you, and apparently the officers above, can't handle a firearm without pulling the trigger unintentionally, than you have NO business owning or carrying a gun.
The point was that there is much less margin for inattention when dealing with a no-safety 2 1/2 - 3 1/2 lb pull as opposed to a 12-14 lb DA pull. There can be no disupute on that point unless someone likes to argue that the sky is pink with yellow polka dots.
In an ideal world, no one ever has a lapse of attention when handling a firearm. In the real world, even experienced shooters have NGs, and too many cops are NOT experienced shooters by any stretch of the imagination. The question is how much of a mechanical margin between you and the NG you feel is desireable.
The only thing that amazes me is that so many PDs think that a cocked and locked 1911 is inherently dangerous while arming their officers with a half-cocked and unlocked Glock thinking it's somehow inherently safe and idiot proof.
Ummm, nooooo, I don't think so. The Beretta safety disconnects the trigger. A safety is very useful when drawing or holstering the weapon. That is the most common time an ND happens. Rriggers can also be snagged by brush when walking through a forest or swamp.