not really. getting ruined is the overriding factor, heroin junkies will shoot speed if smack isn't available, kids will drop acid if they can't get their hands on ecstacy, people will get drunk if they can't get stoned. heroin is probably the ultimate high so if it was available and clean that would be the overriding drug of choice for intravenous users.
its easy to understand - people just want to get wasted. john lennon, brett whitely, john belushi, countless people with loads of money and fame and everything your heart could desire pick getting fked up as their primary motivation. the war on drugs is a war on human nature, there is not a culture in the world that doesn't have a way to distort your perceptions. some cultures ritualise it (such as kava use, peyote use etc.) while others use it as a means to wash away the trials of reality. making drug use illegal (except for the damaging "legal" drugs which the government loves to tax) creates a whole black world of crime, corruption and criminality.
i think the cut off age should be 18, any younger and we are moving into the realm of parental responsibility which is not legislated for (but in many cases it seems it should be). however laws like this need to be flexible to take into account circumstances.
the sad thing is we saw this ice wave coming. we knew it was an extremely toxic drug that causes a great deal of damage to society and the users and yet we did nothing. now we have meth psychotics roaming the streets when all we needed was a controlled and reasonably safe way for people to get high. prohibition fails. it will always fail. drugs need to be a health issue.
Actually heroin has dropped right off the scene due to the younger crowd not wanting to be associated with being called a junkie and the public perception of it. Same thing happened with crack in the U.S. I think you underestimate fad drugs that hit the scene and how quickly the are taken up.Things like pot and heroin have been losing popularity for years.Think GBH heres something that they know is high risk yet still its taken simply because it was the scene drug.
Cut off at 18 years and we can have underage drug use to go with our underage drinking. Only now drugs would be much more accessible since anyone over 18 can now get drugs to sell to kids.So a black market will always remain unless you plan on everyone getting wasted.All I see is more problems if it were made legal.