Yes, I am now more afraid of other cyclists than cars, too. My last group ride, 2 weeks ago (that I wasn't leading) had a couple of egregious incidents. I should have gone with the faster group, as they have good manners. Thing is, though, I can barely hang on with them. The next couple of rides with this group are far to drive to, so I will give them a rest. I think some in the group I lead for think I am a Nazi when it comes to safety and cycling etiquette, but I feel a big responsibility when I lead.