I think it should be a prerequisite for student pilot to have an aerobatics endorsement to help improve handling skills and confidence. Also, a tailwheel aeroplane is a much more aerodynamically pronounced aeroplane because it requires more skill and effort to fly. The nose wheel aircraft is considerably easier to handle and therefore the pilot becomes lazy. Learn on a taildragger and you can convert straight into a nose wheel. Learn on a nosewheel and you may require several hours more training for a safe conversion to a taildragger. A good parallel is in driving. If you learn on an automatic car you will have trouble adjusting to a manual car and will require some practice. Learn on a manual and you can get straight into an automatic. It’s also more exciting to fly a taildraggers and much more challenging.
Also thanks to those who answered my question... very interesting points! very clever answers..