If all drugs were legal, would people still take meth? I suspect meth is abundant now because of logistical reasons i.e. it can be manufactured in the country

If all drugs were legal, would people still take meth? I suspect meth is abundant now because of logistical reasons i.e. it can be manufactured in the country it is sold, using precursors that can also be obtained there (legally or otherwise), rather than having to grow plants (coca, poppies, marijuana) which can be seized whilst growing or being imported from overseas. A good drug policy would make meth seem like the bad idea that it is by providing superior alternatives.