Balance is probably one of the two most important things in a golf swing. The other is grip. When a golfer learns proper balance they can learn to work the ball from right to left or left to right. Hit it high or low on demand. When a swing is balanced properly there are few moving parts, and that makes for a repeating swing. Learning to hook the ball is very important. So many players can only hit it with a fade or slice. The only time as hook comes out is when they "double cross" and go dead left. Learning to hook the ball will give you a better sense of confidence in those tricky situations. It will open up the left side of the fairway, give you more distance off the tee and ultimately it will lower your scores.