And that's why it'll never be adopted by the US military. I own a Glock myself; it's fun to shoot. But I wouldn't choose it for home defense or issue it in the military for exactly what you mention. Yes, I know, keep your booger hook off the bang switch blah blah blah Safe Action blah. If everyone was perfect all the time, there would be no need for a safety.
But I wouldn't trust SR Schmuckatelli or ENS Numbnuts, who grew up in San Francisco and never got within spitting distance of a gun until joining the military, not to shoot themselves in the foot with a Glock. Literally. I've heard some scary stories from many military communities about firearms safety, or lack thereof. From virtually all ranks. We're all not infantry or MAs who handle weapons daily.
I'll agree and disagree all at once. When we made the shift from 1911's in the Army to the M9 I hated the weapon, it just didn't " feel " right ever. I bought one, and still have it, but it is not my favorite handgun by any means.
As to the Glock, when my department went to the Glock there was a lot of resistance from the old timers, mostly concerning the lack of external safety. The fact that it was plastic also was not seen as a positive. I think a lot of what you think about a certain weapon comes down to what you are used to, and your mindset of what it should look and feel like.
The change over went fairly well, ( 1992 ) and we did not have as many ( reported ) AD's as I would have thought. The AD's were mainly due to people pulling the trigger with an empty magazine well, which in a Smith and Wesson has no effect as the trigger is disconnected. Do it with a Glock and you might get a bang you were not planning on. The lack of external safety in my mind does not contribute to this as you should not be pulling the trigger in the first place. It was a bad habit that the design of the gun both saved you from at the same time as encouraging it.
It seems as if those who don't " know " that a hand gun is supposed to have a little bit of heft to it look a certain way do well with them. The Glock is easier to teach a noivce to shoot well due to the consistant trigger pull.
I own several, and carry one daily at work, but a Glock will never be on my list of guns that I have to have.