The problem we are facing is that up until recently model aircraft have been, with very few exceptions, strictly a hobby. Now we have high power low cost motors, light weight electronics, and miniature computers able to do more than some current Air Force aircraft. These are being used more and more for commercial and public/government uses. Do we need liscensing? Absolutly, but only for those that are flying outside the confines of a simple hobby, ie: commercial, gov/public, R&D, etc...