"…and easier to just buy meth and reintroduce the hydroxyl group to get my cold medicine."
Damn stupid isn't it? I'd be funny if it weren't serious.
What's more most of these sympathomimetic amines are both simple organic molecules, and in numbers/types they're a dime-a-dozen so to speak—there are hundreds of them. Any number of which can be altered or 'metamorphosed' into others that have different physiological and psychological effects by almost any competent chemist.
I'm certainly not advocating the use of meth but it's clear to me that the regulations that control the distribution and use of these amines are not working. Essentially, all these brute-force/unsophisticated laws have done is to inconvenience legitimate users and have drug barons streamline the production of more efficient precursors such as phenylacetone (P2P).
We really do need a better way of approaching the problem. For instance, many drug users turn to illicit amines and other street drugs to overcome medical and psychological problems. It would make sense to have these people identified and then be treated by the health system before they turn to the street to 'help' them. Moreover, I'd reckon it'd be much cheaper than the millions now spent on enforcement.
Trouble is moral panic and an almost complete lack of understanding by both lawmakers and law enforcement of the problem and its underlying causes is significantly impeding progress.