Personally, I detest FB and rarely go on IG - I only use them for scrapping stuff now, and they're not my first choice. I just found them to be a huge timewaster.
Forums: I miss them. I used to be very active on a few forums (mostly paper scrapping) years ago (2 peas & there was another one that I can't remember the name now
). I really love the aspect of forums over FB groups.