With the possible exception of having more pleasing lines to the eye while in flight, the monoplane possesses no material advantage over the biplane.
It is not a bad sport, but there's no place to go.
It is hard enough for anyone to map out a course of action and stick to it, particularly in the face of the desires of one's friends; but it is doubly hard for an aviator to stay on the ground waiting for just the right moment to go into the air.