I disagree. Glocks sell well because they are a no-frills pistol. It is designed for reliability, period.
I have three requirements for a carry pistol. It must fire a powerful cartridge. It must carry an adequate number of these cartridges. It must go bang each and every time, regardless of the environment. Oh, and no external safety. (OK, four requirements---I lied). The Glock isn't fancy and it isn't pretty, but it does its job and it does it well.
As a target pistol, I'll admit that it sucks. I shoot almost as well with it as I do my S&W Model 59, but it doesn't feel as good doing it. The ergos aren't that great, the trigger pull is long and not that crisp, and the tolerances aren't the tightest. But as a duty/carry pistol, its design is hard to beat. I've never had a single malfunction short of a single stovepipe (I was shooting one handed and limpwristed it) on the thousands of rounds I've put through multiple Glocks. I've shot Wolf through it, flat nose, hollow points, subsonic (had to manually cycle the slide), even a box of ammo that I found in an abandoned shed that was rotting. It ate it all up and went bang every time. I've dropped it on concrete, dropped it in sand and mud, and I even took it SCUBA diving in the Gulf of Mexico just to see how it would hold up in salt water. I waited a few days, took it shooting, and then cleaned it a few days after that. Not a speck of rust, and it fired great.
My 21SF carries 14 rounds of .45ACP, has a 1913 rail, night sights, an ambidextrous mag release (could care less, honestly), and it goes bang each and every time.
