Why is sports as entertainment more popular than sports as physical activity?

The reason why sports as entertainment is more popular than sports as physical activity is because people have gotten lazier. They sit on the couch and watch the games instead of exercising or actually playing the game. Another reason why is because rivalries are fierce. People watch rivalry games so they can see a fight or an argument and so that people can rub their victories in the face of the people who loss. Basically, sports fans want a wrestling match instead of a real game.