It is a different community, I don't find it dull because there's plenty to do. If you're not flying you can be on the winch or duty pilot, that sort of thing. If you view it as a day out with a bunch of like minded blokes who enjoy a laugh and there's some flying thrown in as well you won't be far short of the mark. Totally different mind set to the turn up, fly, go home mentality of the powered pilot.
I suppose gliding is more of a communal pastime. If you enjoy talking crap all day (in the nicest way), trying to out tall story the next guy then gliding is for you. Much like here really.