Exposing one's bare body in public is considered a bad thing to do.But it is alright for to take part in swimming sports as well as watching them with the male swimmer wearing nothing more than a small pair of swimming trunks.
How logical is this?
Quite logical. it depends up on the mentality of the person viewing it. if a particular sports demands wearing of bikini or shorts by woman, we have to accept it. even in gymnastics, we see such dresses worn by ladies. but it depends whether you are looking at the game or nudity .. !!! your choice. i enjoy the game.