There seems to be some primeval call to experience the four elements with wild abandon; does there not? Look at the extreme sports; they most all deal with pitting oneself against nature, the force of gravity to the earth, to walk on hot coals, spit fire, to fly faster, dive deeper, or go spelunking into the most inaccessible cave possible.
This struck me as I watched the kids; mostly boys, around the bonfire Saturday night. And I have seen one of my own nephews exhibit this behaviour. They wanted to keep throwing fuel on the fire; make it bigger, make more sparks kashoosh upwards, to get as close to it as possible and not get burned. There was that urge to push it to the limit.
We humans seem to do this to prove our superiority over nature. Or maybe we just like to flirt with danger. I don't know; I am no psychologist, but it was just interesting to watch the children interacting with the flames.