I've been flying for only 3 years, but learned the basics - mainly orientation, on a sim before taking to the air in anger. Most of the instructors were surprised by my ability on the first real flight. We have a certification system in the UK which, although not compulsory, proves an idividuals level of competency. Some clubs now insist on a beginner attaining this before they're allowed to fly solo. I achieved mine within 6 months (averaging 5 flights/week). I maintain that the simulator was a great help and like Mike Mayberry above, use it daily.