http://www.gnosticteachings.org/the-...aun-weor/drugs
Quite plainly said. The human conciousness at this point in time is too degenerate to use the natural form of these substances properly. Also there is no reason to use these things if we work for true spiritual realization. Its more rewarding and worthwhile to work for these experiences through meditation, contemplation and other conscious activities such as astral travel.