"Mans Maturity: Rediscovering the seriousness had as a child at play." - Nietzsche
The artist might be the child who had to mature too quickly.
They skip adulthood and go straight to maturity, which is why they are often so playful. like old people who have the wisdom to see life as it is, and that it is what it is.
Most adults are still children from my view. Chasing after dreams like fiat currencies and believing they actually own property.