^^^^^Like he said, one person would f*** it up for everyone. Especially the people at the head who would be seen as accountable for the groups actions.
For example, say you're on a cruise, someone does a burnout and gets pulled up for "hoon" behavior, the people organising the event could be prosicuted under the hoon law, something about organising a hoon event i think.
As it is now, we're just meeting up, accountable for ourselves individually.