In past posts I have talked about "trigger jobs" on various firearms. There is certainly an element of satisfaction that comes from a job-well-done, be it by your own hands or another's. There is an element of owning something that no one else has. If it's custom work, there is literally no other like it, even on identical firearms done by the same person. However, these are fringe benefits. The real beauty is in a better shooting gun, or a gun able to be shot better.
Accurate shooting isn't something that comes naturally to most people. It's a learned skill. It's more than a lucky shot, it's repeatable and consistent. The skill lies with the shooter, but those who are truly serious about firearms understand that their equipment does play a factor in the success or failure of themselves, in whatever form they choose to measure it. A smooth trigger pull by the shooter is greatly aided by a smoother trigger pull on the firearm. For me to shoot a handgun accurately my visual focus remains steady on the front sight and my mental focus is on pulling the trigger smoothly and evenly.
A traditional double action/single action Sig Sauer pistol has a notoriously long first shot trigger pull. While this example wasn't bad from the factory, there were some rough spots, or "grit", along the way and stacking towards the end. In other words it was perfectly serviceable, but left something to be desired. So with about 400 rounds through it and untold dry fires I stripped it down and looked for areas that could use work.
I left the slide alone and focused on the frame as that's where the bulk of things affecting trigger pull reside. Sig's have a nice slick black coating that really tells tales when parts rub against each other. The wear spots become bright steel and are obvious to see. On each of those I carefully stoned and for this project I got brave enough to use the Dremel in a polish-only role.
A felt pad attachment and the Flitz I use to polish brass really made the parts have a glass like surface quality. I only did specific wear spots, not whole pieces. I was at the range all week and put another 200 or so rounds through it during lunch breaks. It's remarkable what a difference it made. The key being that the pistol functioned 100%, not even a hint of issue. Any time work like this is done there is a chance that critical tolerances get out of line.
The reality for me is that if I am running a firearm at the peak of my capabilities I can't consciously detect imperfections in the quality of a trigger. If I am shooting slow precise shots a smooth trigger makes all the difference in the world. The only reasons I can think of to not have a quality trigger are cost of having someone else perform the work, or not wanting to put in the time to do it yourself. And I get those completely. For me, I don't have the funds to pay someone else, so I learned out of necessity. I'm not saying for an instant that poor quality triggers can't be shot well, only advocating that nice ones can be shot well, easier.