I agree, I like to ride with groups but I like to know the people I'm riding with. Like Cliff said, if they can't ride or cause an accident you can get hurt too. There's too many people riding around that don't really know how to and I don't want to be too close to them. Plus when your riding in a group it helps to know the people your with know how to ride in a group because many people don't understand how to. I don't act like an ass when new people get near me but I'll still keep my distance.
Ryan