We can handle it, you Americans can't.
Its true. The same applies to drinking. America has the highest rate of binge drinking, specifically because we make it "cool" by putting restrictions on it. Whether its pot in Holland or drinking in Germany, they can handle it because its not a big deal.
Would Americans go trekking across europe if America didn't have the laws that we have? No way. Be honest, kids go to Europe because they can't have those things here. There are rich guys that ship their cars to Germany to drive the Autobahn. Same thing.