I agree. But nowadays, its seems pretty clear that not only musical or artistic creativity can be stimulated and expanded by drugs, but violence and perversion as well.
Not to pick on Jbass or veer too OT, but this seems like the classic "baby + bathwater" attitude about drugs, employed by the brilliant architects of Our Great Nation's oh-so-successful war on them.
Use of mind-altering substances hardly originates in 20th century western culture. Humans (and probably pre-humans) around the globe have used them for their entire history on the planet.
Beer: brewed by Egyptians almost 5000 years ago.
Cannabis: used across Asia and Asia Minor for centuries.
Coca leaves: chewed by the Incas for centuries, still used to this day.
These things are just a reflection of what humanity does -- we strive to experience and thereby find what exists within and without ourselves.
Mind-alertring substances are not criminal, and they're not evil -- they're reality. And there's a possibility they played a pivotal in forming some of the roots of human culture, technology, religion, and art.
I don't mean to get all Anthro 101, Psych 267, and Neuroscience 301, but to really make an informed decision about drugs in our society it's important to realize that:
1) there are VERY BIG DIFFERENCES between different classes of substances, and their FX. Pot <> Heroin <> Crank.
2) It's a natural part of life on Earth (isn't outlawing a plant kinda stupid at an existential level?), and has been for our entire history.
3) It's not really an issue that the criminal justice system can effectively deal with, as has been proven IMO.
4) There is/are very, very little hard data about drugs (or banishing them) and their positive/negative FX on society in the long term.
* end rant *