Very good point; however one thing to keep in mind that in Japan, Singapore, HK etc., drugs use is seen by the great majority as a huge moral failure and a failure to the family. Social pressure and stigma of drugs use is much more severe. It's not glamorized as "stupid things teenagers do". It's vilified as "the depraved things failed human beings do". Interestingly this tack isn't one western societies have used in their toolbox to counter drugs abuse.