Many people who have enjoyed the Club O beach nude would not enjoy it as much, if at all, if the majority of people on the beach were clothed. Some obviously do not care what others are wearing or not wearing, but many do and are far more comfortable as part of a group. I think that this is just human nature (and not intended to be rude) and it is why many beaches/resorts/pools in many places that permit nudity require nudity.