The fresh air, yes. But you get fresh air even if you're driving around in a cart. Exercise? Even if you walk a course, you're only walking about a mile and a half. No, golf is about being outside, taking in the surrounding beauty (there is no more perfect a spot in civilized society than on a golf course), and then obviously the challenge of the game itself. Exercise doesn't even factor to me. As I am not a hot weather type of individual, walking with a hand cart in tow and getting stuck under scorching sun endlessly in July (yesterday, for example, it got to 102 out here) are not my ideas of fun.