Why should people be forbidden from getting high? And if they should, are you also campaigning to make their most popular drug, alcohol, illegal? Or is it just the drugs used by people you don't like that should be criminalized?
What about prescription drugs? Their only non-medical use would also be to get high--should we make them illegal? FedGov is trying -- doctors are afraid to prescribe "too much" pain medication to their patients for fear that NannyGov (who did not spend 6+ years in medical school and has no business dictating scientific policy to them) will yank their licenses.
Soap, glue, correction fluid all have purposes other than getting high
So then, you would agree that criminalizing snack foods and shampoo is a silly waste of our tax dollars?