Explain to me how the airspace authorization rules make any sense. A teenager can fly for fun inside controlled airspace by "notifying" the airport operator and tower. A licensed, tested, certificated commercial adult operator can't operate in the same space without submitting a lengthy web form with detailed explanation about how they will operate safely, and then wait 90+ days for a response from the FAA. This is totally upside-down an nonsensical. I see this as the biggest disappointment in the Part 107 rules.