The highest classed drugs (as in class A) have the biggest negative impact on society, and I don't thin that anyone sensible would try to argue that heroin, cocaine or crystal meth are harmless; or beneficial in any way? I can be argued that people should the personal right to take anything they want; and while I agreed with that in principle, people and society have to pick up the pieces. If drugs were available in a regulated way could solve many problems, but it would have to be done in such a way to it doesn't create a industry which profits from peoples addition.