As others have said, I think life just gets in the way and people fluctuate in and out of forums and other communities; its not necessarily any specific reason related to the forum per se that would make people leave. But no new people coming in is a problem. Ive been part of a gaming/films community since about 2000, and its been slowly dying in the past ten years or so – and it was sad to see. I think there it was definitely a mix of people getting older, interests shifting and time constraints; and lack of user influx.
I think to keep a forum going, you just need a healthy influx of new people (because people inevitably leave), and people that dont just shitpost or troll, obviously. Its so much nicer to interact with nice people (obviously)
But joining a forum can be daunting, so thats always gonna be a bit of a barrier...(it might be easier if there is a certain number of active members: the more, the easier it might feel)
and also, finding the forum might not always be easy. I learned about this forum by accident, and who knows who else would love to join but doesnt even know about this place?
Anyway, as for me, what I could recommend to users here, and just in general for good communication
- try to be clear in communcation (dont write one-line twitter-like things that make sense only if youre well-versed in obscure internet slang);
- at least write a little bit in your postings on your own (dont just post links or gifs or videos without anything else);
- accept that other people have other opinions (try to see the world less in black and white, evil and good, etc);
- try to be less negative (criticisim is obviosuly fine, but try to refrain from just shitting on things people enjoy, unless there is a very very good reason);
- stay on topic (dont use the Steam thread for any random topic or article link);
- use the other threads (they exist)...
- there is probably more but I cant think of anything else right now. And I wanna stress these are just what I feel are good tenets to follow when engaging in conversations.
Oh and if you get annoyed by anyone or any topic, try the Ignore function (at least for a while) – or just step away from the forum for a few days. In general, I can recommend to be offline inbetween, its good for your mental health.
In conclusion, be excellent to yourself and each other.