[cweagans]

I wouldn't say they're "deregulated" in the US. There are still a number of rules that pilots have to comply with (for instance, no commercial use, limited fuel capacity, limited areas where flight is allowed, etc). Sure, a license is not required, but the US will find a way to complicate things with red tape even if a license isn't required.

[Stevvo]

"Limited areas where flight is allowed" is actually very permissive; in class G airspace you could go anywhere. If you take a VHF radio and ADS-B out transponder with you and have done the radio exam from the PPL, in theory you could call up the Tower at a class B/C/D Airport and ask to land. At deltas they might actually let you.