There is a slew of reasons to like sports.
Competition. Excellence. Excitement. Winning. Work. Pick a lesson and a component, and sports in general can offer untold wealths and rewards.
It's one of the side benefits beyond the basic aesthetics of athletics.
Two of the great subplots in sports are inertia and response.
Inertia is the scientific fact that things in motion tend to stay in motion and things at rest tend to stay at rest. This is every bit as true in sports, too, and it's the sport-ific definition of momentum.