Like the .30/30 thread in the Rifle Country, after four pages we have probably hit on all the key points. I will just throw in my perspective on Glock triggers as someone who started shooting in the early 90's.
Back then we had few choices. Colt 1911's were troublesome and often need a trip to the gunsmith before it would function. Beretta 92's and SIG 226's were the king of the hill but even back then were several hundred dollars above similar pistols. Smith and Wesson 3rd Gens were out, but did not seem to take hold in my area outside of a policeman's holster.
That left the Ruger P-85, Browning Hi-Power, some Walthers (more expensive than SIG for the most part), HK (still more of an exotic firearm), STAR, FIE, surplus, and the new weird plastic gun from Glock (I am sure I missed some others).
Being a first time semi-auto buyer and new to the 9mm, it really boiled down to the Beretta, SIG, Ruger, and Glock. The others were cool, but hard to get accoutrements, such as holsters, magazines, and sights. Being in college and thus poor (we paid our own debt back then), I really wanted a Beretta or the SIG, but they were just too much. I looked really hard at the Ruger but it just did not do it. Then came a look at the Glock. On my first trip to the store I checked the gun for clear, pulled the trigger on the Glock, heard the punny snap for the striker, couldn't pull the trigger again without manipulating the slide, put it down and walked away.
I went back home did some math and figured it would just take too long to pay off a Beretta or a SIG so I went back for a Ruger. A different salesman again steered me towards the Glock. he explained how it worked, explained the advantages and then showed me the sale price. I bought my first Glock for 280 dollars. Less than half of a SIG. I was able to leave with the gun that day and still had some money to buy ammo. I guess that is a long winded way to tell you how I got started with Glocks. Since then I have tried all different types of pistols from 1911's to Styer GB's and always settled back into Glocks.
Once Glock became my gun, I then moved into the parts game. I changed everything in hot pursuit of the perfect pistol. I found that some parts helped, others did not, and some made the gun unsafe. The more I shot my Glocks the more I became familiar with the trigger, the more I liked it. It is not glass rod, it does not have a clean break, and it most certainly is not the lightest of triggers, but it is simple and works.
About five years ago I started to remove all the doo-dads from my Glocks and go back to a mostly stock pistol. This included the trigger. I learned how to shoot the stock trigger well. I also discovered that increasing my hand strength helped more to better my shooting than all the "improvements" I made to my Glock. I have worn out a few Captains of Crunch strengtheners to get here. I do still polish my internals but leave everything else pretty much stock. It is not a perfect trigger but it works.
I realize that the Glock is not for all. I have spent about 30 years shooting them, so I am going to ride it out to the end with Glocks. I do enjoy shooting other handguns but don't feel like trying to undo 30 years of muscle memory at this point in my life.
If you are just now coming to the Glock game, you are coming at a good time. the Generation 5 trigger is better than most previous iterations. It will never be as good as the trigger on your 1911 custom gun, however if you stick with it you can learn to shoot it well.
As some others have said much more succinctly, the more you shoot Glocks, the more you learn to understand and appreciate the trigger.
Merle teaches us that, "If you don't love it, leave it" but be sure to give the Glock some time before you do. I am certainly glad I gave Glocks a second look. I can't imagine trying to write this much about a Ruger P-85. The longer you shoot it, the more apt you are to realize that it is not all that bad.
EDIT TO ADD: Pictures of my first Glock. I still have it and it still shoots great! I gave it some TLC today. I still have the black internals and the upgrade ticket from Glock.