Thanks for your great work! Clearly you are an outlier among social media users, most of whom are overwhelmingly (if not exclusively) consumers. My karma-farmer comment was a generalization, not directed at you. I apologize if it gave offense.
As for what anybody hopes to do with social media karma, I really don't know. Someone once told me well developed reddit accounts can actually be bought and sold, but that has to be a very niche activity. Over the years I've abandoned at least a dozen reddit accounts with tens of thousands of points, because I came up with a username I liked more. My best guess is that the main appeal of karma is validation for people who don't have enough positive interaction IRL, but I'm not trained in psychology.