Here in the Washington, D.C. metro area, dancing for fun is alive and well. There is folk dancing, square dancing, round dancing, contra dancing, English dancing, Irish dancing, Cajun dancing, Blues dancing, polka dancing, swing dancing, a bit of country western dancing, salsa dancing, ballroom dancing (American and international) and other forms (as at the clubs) that I've not mentioned. Older persons dance. Younger persons dance, too, and in good number.
Check out DCDANCENET.COM for more specifics about the variety and extent of dancing here. (Close to but a comprehensive listing.)
There are those who pursue dancing seriously, often (but not always) for competitive. But the majority dance for fun and, truth be told, many also ISO relationships.
Enjoyment comes first. Yes, great form and all that is fine, but not at the price of pleasure. Enjoyment reinforces continued dancing.