What should I use it for?
In case of posts - should I downvote things that I don’t agree with? Or things that I don’t want to see in my feed (posts with low amount of votes fell more to the bottom)? Or things that I consider harmful/stupid/younameit?
In case of comments - should I downvote something that I don’t agree with? When should I use this button in case of comments. Or maybe I should not - cause what’s the point, actually?
Not saying this is necessarily good, but in practice it’s a disagree button. It will always be a disagree button. If someone disagrees with you and decides to respond, they will probably downvote you.
There are people on Reddit who generally upvote you just for participating in the discussion even if they disagree (to be fair this is closer to what Reddit intended it for, not for showing agreement or disagreement with the content itself), and I do that sometimes, but that is rare in the grand scheme of things (and again I don’t know if this is a good use for the voting buttons or not). Most debates I have been apart of on Reddit (admittedly not many), people are usually downvoted by the opposition or they don’t vote on you at all.