bullies and jerks can happen anywhere, online or in person groups are no exceptions. I have had great interactions in groups like this one, and on FB, but like anything else you have to find others who speak your language.
I am peaceful and don't want to fight, believe I can live and let live even if we disagree, and that if we disagree it does not mean you and I are enemies.
I find that many groups want me to comply with their leaders word usage, social outlook, etc and that I am not welcome if I don't stand in the same line and sing the same song, metaphorically.
Civil interactions with others regardless of topic or subject/ belief or opinions is the mark of a well moderated/carefully tended group.
Like other things in life, some fit, others are not places I would want to stay. It probably depends a lot on the individual. I have not made "lifelong friends" or deep meaningful relationships on line, but I have a lot of fun with better known members of some of the groups I have belonged to for some time now (over 5 years for some of them). Keep looking, I think there is something out there for everybody!