I find that I enjoy going to bike events and local rides with buddies but when I take a long ride I prefer riding by myself.
Maybe it's the loner that I am (always was) or that I usually sit tank to tank while most of my riding buddy's need to stop every 2 hours. Not really sure what it is.
Depends on the people, a group of people that know how to ride is better than one dipshit that can't ride. I don't mind 8 or 10 bikes if it's people I ride with often and we all know each others riding styles. The worst is big charity functions where guys can't ride worth a crap and you worry about hitting them when they fall over, or being hit by them.
Prefer riding with friends I know, from 1-3 other bikes. Long trips I prefer solo or 2 up with the wife. I don't like having to conform to another rider's schedule.