https://en.wikipedia.org/wiki/List_of_places_where_social_nudity_is_practised



Socialised, non-sexualised nudity, has never been proven to create harm. There is no scientific, nor studies of a psychological nature, which conclusively states abnormal conditions as related to it. In Europe, Asia, and the South Pacific, non-sexualised social nudity is part, and parcel of the societe.

https://naturistphilosopher.wordpress.com/2015/02/01/benefits-of-social-nudity-body-acceptance/



Therefore having "clothing optional" parks and beaches will not results in an abnormal burden on American societe. Naturists are people with a proven record of self policing behaviours amongst themselves A comprehensive list of societal benefits are listed:http://www.scientificamerican.com/article/nudity-found-to-have-new-benefits/

States, cities and all municipalities shall therefore designate certain areas of beaches, parks, and other areas as "clothing

optional."