Hey O.F.
1- Which model/ generation do you have?
I have a Gen 3 G19, wifey has the Gen 4 G17
The rest of the answers will be for both guns as we like to keep things the same, no matter which we pick up
2- Would you buy it again?
Definately

3- Was it acceptable when you got it?
Yes
4- What did you NOT like about it?
Little bigger than others for CCW, but that ain't a real issue yet, but it does get heavy around the house and yard.
5- If you modified it, what type of mod did you do? AND was the mod worth the cost and effort?
Ghost (3.5) trigger job, $25.00, upgraded recoil springs $25.00 and yes, it's worth it.
We like the lighter 3.5# trigger better than the glock standard 5+# trigger.
Recoil springs changed as one failed du to OE (put in backwards and slide charged

Also have Advantage Arms .22 conversions for both which makes training ALOT cheaper.
Piss off a bunch of .22 support hand, on the move etc... then swap out to 9mm in seconds and go again.
Great for muscle memory.
Paid slightly over $240 for them back then, now running around $325
6- I like adjustable sights because I tinker with different ammo.
If you have adjustable sights, what did you get? Are you satisfied with your choice?
na
7- express any other pertinent comment
I too originally thought ... "Oh Gee, a plastic gun. That'll never last".
It's like the AK of pistols, run'm dirty and the still go !
At home I keep the only G19 mag in it's well and all additional mags scattered about are for the G17 which still fit the G19 for obvious reasons.
Again, I am directing this survey towards experienced 9MM Glock owners ONLY.
Ooops, should have read the whole post first !

I thank you all in advance for your help.

You may commence firing [==>>>
pew, pew,.... pew