I vote on every post I see. That combined with the “hide read posts” setting means I always see new stuff on the front page.
I upvote any post that I want to see more of in the community it was posted to. Posted game news in a gaming community? You get an upvote, whether or not I actually like or care about that game. I also upvote anything I don’t have any particular reason to downvote. It’s my default vote.
I downvote any post I want to see less of. Clickbait titles or misspellings are an automatic downvote. Off topic posts are always a downvote. And any post that comes off as salty gets downvoted, especially if the post is salty about being downvoted. I just don’t want to see any of that, so I use my vote to discourage it.