Before I get into my answer to the OP I just want to say that I am not a "Glock-a-holic". I know that there are gun snobs out there but I ain't one of 'em. You gottcher S&W, yer Colt, yer Sig, etc but I am broadminded when it comes to most things. Guns, Cars, Boats, Motorcycles, etc.
I am well aware that there is more than one brand of quality in just about anything. When it comes to guns I love most of them they each have their special qualities and characteristics and I also know that we are all individuals. We each have our own opinions, preferences, abilities, disabilities, wants and needs. Now that I have that out of the way I'll answer the OP.
I have 4 Glocks. But like I said above I'm no one-trick pony. I have Colts, Rugers, S&Ws and even a littel Keltek mouse gun. A friend let me shoot his Glock 23 and I went out and bought one. That was in 2004 and in the next 2 years I bought 3 more.
I didn't buy them for their looks I'll admit. But the FIRST thing that got my attention is that they are very accurate right out of the box. I have a mid size .40, a full size 9mm, a full size .45auto and a compact .45auto. I was surprised that the compact shoots as accurately as the full size but in Glocks at least, sight radius doesn't seem to affect accuracy. I am able to shoot the compact as accurately as the full size.
I'm not rich. I appreciate that there is a pistol out there that is more or less reasonably priced. That way I can have more that one.

If you are after a quality, tough-as-nails, accurate,dependable semi auto Glock is a good choice.
Even with my arthritis I can field strip one and reassemble it in 20 seconds. I love the fact that they are all similar and very easy to maintain.
In the 9 years I've had them I have about 22K or 23K rounds through them (I'm not at home so I can't look it up in my shooting logs) and not one problem...not ever.
I am very well pleased with all my Glocks. I agree that they are not the end-all be-all do-all guns but they certainly have their place in the market.