While I have fired Glocks, I haven't drunk the kool-aid. I have too much hand between my thumb and booger hook, and since I'm not a big fan of slide-bite, I'm also not a big fan of Glock.
That being said, I would have to say they are, in effect, the AK-47 of handguns. They're dependable, accurate enough to get the job done, and almost completely idiot proof. That's why so many LE agencies issue them........almost no training is required.