New Clubs and Fitted For The Right stuff

When some of us started playing Golf we would walk into Caldors, Ramsey Outdoor or some type of sporting goods store and bought golf clubs off the rack. The problem was if you where to tall or short there was a problem. With proper club fitting we can find out the right Grip size, the right length (hit more in the Middle) and right Lie Angle ( less Pulls or Pushes). How many irons do we what in our bag, what loft do we need to keep the golf ball in the air to hit a bit longer. Do I have the right wedges ( including Bounce)???? I go thru a fitting just about every 2 years to make sure things are good.