I’ve had my Gen3 Glock 17 since 2009, I got it when the GSSF indoor league started at an LGR when I lived back east, and we were having too much fun when the non-Glockers complained to the owner of the place and that was the end of the league.
While there isn’t anything man-made that can be called “perfection”, there also isn’t anything wrong with these guns that about 12K rounds of live-fire practice can’t fix-LOL! This one has a Hogue grip sleeve and a Grip Force Adapter and I’ve had the striker engagements polished a while back, and I like the GL9 Magpul mags for the 17 (and the 19).
The best defensive & competitive shooters I personally know have a least a 17 & a 19 sitting in their safes, when they are not carrying them, training with them, or competing with them. The Glock 17 works for me, and if it works or doesn’t work for somebody else, that’s OK also.