When I was shopping for a compact semiauto I considered the glock. Did lots of research first, and these things scared me away:
-Unsupported/loose chambers - whether ammo was faulty or not, this certainly only increases the likelihood of an exploding handgun. It just makes common sense. The case is designed to be surrounded by a fat metal barrel when fired.
-firing out of battery - this was a big one.
-an incomprehensible trigger on the end of the trigger, which may be the stupidest thing about these guns. You know how in the movies, the big red SELF DESTRUCT button has a little door that closes over it, to keep someone from bumping into it? Yeah, that's a safety. You wouldn't call it a safety if they just put a smaller self-destruct button on top of the actual self-destruct button! It'd STILL be easy to accidentally hit (or non-accidentally). I think Glock should not be using the word 'safety' to describe that thing.
-the requirement that the trigger be pulled to disassemble. The trigger should only HAVE to be pulled for ONE REASON. Imagine if our Big Red Self Destruct Button mentioned above needed to be pressed before you could shut down the Self Destruct system for cleaning? Are you kidding me!?
-The lack of an external, manually operated safety or decocker (like the Walther p99 has. Now that's a decent design).
-Polygonal rifling that limits your ammo options, and warnings from the manufacturer shooing customers away from lead bullets and reloads.
These things together spooked me away.
I bought a CZ-75 P-01 and haven't looked back.
I will revisit the idea of purchasing a Glock when Gaston stops disguising recalls as 'upgrades' and stops pretending these things are perfect.
I even have a good reason for owning one - I have a Kel-Tec Sub2000 that takes Glock 17 magazines. I have two 17-rounders and a 33 round magazine. It'd be nice to have a pistol that could share those mags, but my problems with the Glock design are enough to deter it. If I did go that route, I'd be installing the aftermarket safety on the trigger, replacing the barrel with an aftermarket non-polygonal match-grade barrel, and definitely wouldn't buy one in anything other than 9mm until I'm sure the firing out of battery issue is no more.