Nudism is the practice, advocacy and defense of social nudity. It only exists as a separate issue because nudity has been systematically criminalized, it would seem, ever since the Bible was written.
The dumbest invention of all time
[A swimsuit] also caters to the whims and fears of those who feel insulted at the sight of a naked human. They choose to be insulted and demand to see shamed those who refuse to make that choice. The rights of these people who they demand shamed come second, in their view, to their demand that such people "decorate" their bodies with the rags they themselves proscribe as a cure for their own offense.