I dunno, for more niche computer science or math subjects, I don't feel like people argue in bad faith most of the time. The people I've argued with on the Haskell IRC years ago genuinely believe in what they're saying, even if I don't agree with them (I have a lot of negative opinions on Haskell as a language).
Politically? Yeah, nearly impossible to find anyone who argues in good faith.
Politics and related stuff is what I had in mind, yeah. To a lesser extent technical topics as well. But, I meant "good faith" in the sense of both believing what they're saying and also approaching the argument open to the possibility of being wrong themselves and/or treating you as capable of understanding their point. I've had arguments where the other person definitely believed what they were saying, but didn't think I was capable of understanding their point or being right myself and approached the discussion thusly.
Politically? Yeah, nearly impossible to find anyone who argues in good faith.