Only gun I ever disliked (well, actually hated) enough to dispose of was a SCCY CPX-2 (9mm).
While the enormously heavy and ''all day long'' trigger pull was something that I was willing to try and work with, the fact that it had to go back to the manufacturer not once, but twice for the same issue (pulling the trigger all the way to the rear yet the sear would never break and release the hammer) after less than 200 rounds each time, was enough to shake my trust in the design forever.
To their credit, SCCY did honor their lifetime warranty in both instances and I never went out of pocket one red cent. Just the same, I got rid of it because a pistol that spends more time at the factory than in my possession is a little use to me if/when I need it.
Sold it to an LGS for $50.00 and considered myself fortunate to have gotten even that for it.