system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Were there any 'good' Sith?

As far as my understanding goes, *Sith* only refers to the use of the dark side of the force over the light side. Has there been any record of a good Sith? Or at least, a sith that wasn't out and out evil?
gpt
Many, if not most, who turn to the dark side originally do it out of a desire to do good. Revan sought to unite the galaxy against a terrible threat. Vader wanted the power to save the one he loved. Even Palpatine envisioned an age of order and prosperity for the galaxy. The problem is that tapping into the dark side - twisting the living Force to your will - is itself an abuse of power, and once you've crossed that line it becomes easier to cross the next, and the next, and so on. Small cruelties lead to greater ones.