The Scottish Ceilidh, the Irish Ceili and the many Platford and Regency style balls hosted by folk clubs and dance groups keep these very much alive.
When I travel I always take my dance shoes and find local groups to drop in on and am always welcomed with literal open arms.
Sadly in my 40s I am one of the younger attendees of these events. Which is a tragedy for those of us who already love the culture and those who will never experience it.