system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Was Darth Vader angry or depressed?

First off, I know he's angry, it's just, he never really seemed that way to me. Just angry seems like far too simple of a way of putting his general mood. As a person that suffers with depression, the anger Vader displays, to me, has always seemed like anger borne of sadness, rather than the rage you start to feel when losing a game, it comes off as the bitterness that despair brings. To me, he always seems like the guy that would go on an anger rampage, but would want to cry while doing so.
gpt
Vader's experiences with the scientist Cylo show that he has a lot going on in his head.  He hates who he used to be, and what little is left of 'Anakin' in him hates who has become.  He despises Obi-Wan but also wishes that Obi-Wan had killed him.  He knows his life choices have crippled him, and he often has to suppress thoughts of Padme and what could have been. 

Dominating this mess of emotions, though, is Vader's will.  He is sad, angry, and traumatized deep down, but he is resolute.  He resists the temptation to wallow in misery or nostalgia.  He has and endless supply of demons, but he also has the will to choke them into silence.