After getting the hang of the simplicity of the rudder as it applies to the basics of flight. Taxing, crabbing in cross wind and keeping a straight aircraft in a loop, you are denying yourself probably the most fun part of an aircraft as it applies it self to almost every intermediate and advanced aerobatic maneuver there is. And thats not even touching on the subject of 3D. Which eventually may be a part of your experience or maybe not. However the use of the rudder is not limited to 3D only and if used from the get go makes flying 10 times more fun IMO.