[ConservingFreedom]

It directly and chemically interferes with will power, rendering self-will impossible.

For some users. There's no evidence that many of them are prevented or deterred from getting it by its illegality - meanwhile we spend tens of billions of taxpayer dollars punishing the many who can handle it and those who supply them, thereby channeling more tens of billions into criminal hands.

[DiogenesLamp]

There is no functional way to make a distinction in the law between those who are susceptible and those who are not.