They don't have to. Heroin use has been increasing all over the country - sadly. Kids get hooked on Oxycontin or some other medicine cabinet drug and find they can't afford it on the black market so they find they can get a dose of heroin for $5 instead of the $20-$50 for Oxy. Next thing you know they're hooked.
Drug runners can't create demand by sheer force of will.
They don't have to. Heroin use has been increasing all over the country - sadly. Kids get hooked on Oxycontin or some other medicine cabinet drug and find they can't afford it on the black market so they find they can get a dose of heroin for $5 instead of the $20-$50 for Oxy. Next thing you know they're hooked.
True - so by a happy-for-pot-dealers coincidence, the black market for heroin is having an uptick just as the black market for pot is being deflated by legalization. But that's a considerably more complex and less reliable linkage than "all they would do is switch" - if pot legalization continues as it seems to be trending, the loss of criminal opportunity will outstrip heroin demand, to the benefit of us all.