Taildraggers offer operational advantages in certain very specific environments (undeveloped runways, ski flying and flying boats) , and are great for improving one's piloting skills. However, the majority of aircraft operations do not benefit from these characteristics, and are sensitive to the reduced directional stability during certain phases of ground operations. Its great that pilots might become proficient in taildraggers, they will be better pilots for it. Similarly, they will be better pilots for receiving aerobatic/instrument/multi engine/night/rotorcraft training too! Learn and practice every type of flying you can!