I equate Glocks to AK-47s. Not pretty. Not fancy. Nothing to brag about accuracy wise. Not great triggers. Better designs exist. etc....etc. BUT, just like AKs, they hold up to lots of neglect and abuse and go bang when ya pull the trigger. Judge 'em for what they are.
I like some CZs and some Glocks. (I only have 2 CZs at the moment, and several CZ-pattern guns.) I also have 2 Glocks. My favorite Glock was a lightly tuned Glock 34; my favorite CZs are a Sphinx SDP* and a custom (IMI) AT-84s*. I also have an 85 Combat that I hold close.
*I know they're not CZs, but they don't.
From what I can find about the AK-47's design objectives, a high rate of fire using a relatively potent round (i.e., get a lot of lead down range as quickly as possible and overwhelm the opposing forces), and do it with high reliability, was far more important than a very accurate weapon. Snipers didn't use AKs, but the soldiers facing an enemy in ground combat did (and in some cases, still do). The Soviet design theory was "be practical, keep it simple, and be sure it works" and that design approach seemed to underlie almost every weapon or weapons system used by the Communist Bloc. When the Communist Bloc combatants failed, the failures were seldom blamed on the weaponry.
Glocks have been well-represented in most of the Gun Games, and if there's something about the Glock you don't like, it's very likely you'll be able to find an after-market alternative that will fix what you don't like, and it won't necessarily be horribly expensive. I disliked them at first because of the grip angle, but I found that if I used the sights, they were just as accurate as most of my other guns.
Some find Glocks ugly, but you can hear the same complaints about many of the Ruger models. That said, the Rugers and Glocks just keep on running like the
Energizer Bunny.
I think the reason the Glock (and Beretta) didn't make the cut in the recent US military handgun competition was that they didn't really offer a single gun that was truly MODULAR (i.e., able to function as a 9mm or .45. with only modest part changes.) That modular approach makes a lot of sense for the military armorer in the field, and Glock (and Beretta) just ignored it.
There are a LOT of Glocks being used by militaries around the world, and the U.S. Army's 75th Ranger Regiment and the U.S. Special Operations Command have embraced them. Apparently some Delta Operators use Glock 22s (i.e. .40 S&W, an almost unique U.S. military application). The Navy SEALS last year began to phase out their SIG 228s/229s for Glock 19s and I don't think any of these elite forces would be satisfied with guns that only offered mediocre accuracy.
You don't have to like Glocks as they'll continue to do well without every CZ owner's enthusiastic support. But you shouldn't denigrate them only become you don't like how they look or feel in your hand.