Actually, I wonder how many people -children or adults - take up dancing with a view to competing. I would have thought most do it because they want to dance. Same with music and singing, although there are competitions here too. Sport is a rather different matter, and is competitive in essence, even on the level of half a dozen lads playing in the street with goalposts or cricket stumps chalked on the walls (showing my age - you could play in the street when I were a lad).
John Kelly.