Et tu, Aggie? We've had civil exchanges in the past; don't start taking debate lessons from Dane and Fred25 now.
I simply wanted to get your opinion on why certain drugs should be prohibited as a result of causing irresponsibility and potential harm to others, while other substances (such as alcohol a hoary example, I know, but still apt because of the undisputable harm it causes) and behaviors that have the same potential results remain perfectly legal and even acceptable. The question is raised in good faith; respond as you choose.
As for alcohol, tell me another illicit substance that you can sit down at lunch and have a little and not get intoxicated.