In my short experience with aviation, airports and flying clubs, I've heard more bitching than you probably would at a hairdresser's
Actually that's another good point. GA is renowned for that. I don't know why but it would make a good case study for a Psychology PhD.
It could be because almost everything to do with flying is such a hassle on the ground, compensated only by the pleasure of being airborne. And because so many people are clearly not able to fly as much as they would like....