IMO, there is a fine line between being very active on the forum, and making this place too significant a part of your life and psychi. Some will come and go. We have a whole new batch of personalities now, as every year when I return after summer. I enjoy getting to know these folks as well as catching up with those that are a part of the furniture here. Some may return, when they have something interesting to share, or when a thread piques their interest. We have far more people who watch our forum without participating at all.
Having done "the forum thing" for over 30 years now, let me add this:
The real threat is not from the outliers, but that the herd takes over.
When the herd takes over, the insipid plays-well-with-others person gets ahead of someone of actual insight.
I come here because it tolerates firebrands like mso, Cosmic, mlc (to a point), and many others. I do that because my experience is that forums die of entropy when too many nice guys just want to discuss nice stuff and as a result, all the information because low value, all the discussions become circular, and anyone intelligent flees.
I consider this the best pipe forum. I do not post on Reddit because I am not a barista or Whole Foods checker, and I was ejected from one other forum that had a political agenda, and left another because its mods were incompetent.
The worst thing to see on a forum is this:
Person A: (innocuous, happy but factually incorrect opinion)
Person B: "That's nonsense and does not reflect reality."
Moderator: "Person B, you're in time-out!"
You should give Person B (firebrand) a medal for resisting entropy here.
All of us succumb to this mental disease: we want to hear happy things, believe everything is going to be OK, and think fondly of simple solutions. But that never works, and if you encourage it at a forum, entropy wins.
Sometimes those who invest the most are your most vital users, and they are actually committed, so they will take it seriously because they see the forum as a community, not an online site. These generate more problems, but also better results, than the herd.
$0.02