Why does everyone wish they possessed combat abilities?
This is related to the motive behind the Sky-top Celestial Race's invention of the human body reaction furnace theory.
The Sky-topians had reached the pinnacle of mechanical civilization development and then conceived another idea, thinking that it was very troublesome for people to drive cars, pilot planes, and operate machinery while working. However, if one could evolve their own body to run faster than a car, fly steadier than an airplane, travel through outer space without wearing a spacesuit, and voyage among the stars without steering a spaceship, relying solely on one's bodily strength, then how convenient would life be?