What a miserable world people commenting here seem to live in where going out to dance is a sort of status challenging activity?! When I was younger and frequented dance floors, everyone immediately started dancing as soon as the music started playing, wasn’t that the point of being there?? Never even occurred to me to fear being the only one dancing. And if did happen I would be wondering what kind of people come here and just stands there.
There are many events where dancing is not the main point of being there. Wedding receptions being an obvious one, but there are others as well.