I cannot make up my mind on this one. THC the active ingredient in the plant can in certain circumstances certain and with certain types of people especially the young with developing minds can get a psychosis which means experiencing paranoia and fear and if taken often enough (every day maybe) or in large enough. The psychosis can last a long time maybe even for life as I understand it but the risk appears small. Is this enough of a reason ? Alcohol and fags hardly speak volumes about legalising it. Anyone else got an opinion ?