Any gun I can't trust is gone, ASAP. Right now, I don't have any handgun that I'm looking to get rid of, they all work great.
In the past, I've had a lot of semiautos that had issues like:
Limpwristing. Off they went. I gave up on trying to fix them a log time ago.
Mag issues. Usually another mag or spring replacement fixes it.
Mystery guns: No obvious problems, but they just don't work. Last one was my Taurus 809. My second, and last Taurus gun. I don't need a third one to learn my lesson. A friend is fiddling with it now, and he's got it almost trustworthy.
All the revolvers I have owned over the last 38 years have been perfect out of the box, or after their previous owner's "improvements" were removed. The primary cause of the problems was a shortened main spring. I have to admit, I was shocked at how many Dan Wesson 15-2s have had this done to them.