The meaning and purpose of dancing is the dance. Like music also, it is fulfilled in each moment of its course. You do not play a sonata in order to reach the final chord, and if the meaning of things were simply in ends, composers would write nothing but finales.
Think about a piece of music - some great symphony - we don't expect it to get better as it develops, or that its whole purpose is to reach the final crescendo. The joy is found in listening to the music in each moment.
We thought of life by analogy with a journey, a pilgrimage, which had a serious purpose at the end, and the thing was to get to that end, success or whatever it is, maybe heaven after you’re dead. But we missed the point the whole way along. It was a musical thing and you were supposed to sing or to dance while the music was being played.