Lack of parental love at home, impaired and tense relationships between parents and dictatorial handling of children have been traced out as significant root causes. Easy availability of and access to money are equally dangerous. They lead to habits such as cigarette-smoking the first step to drug addiction. The next stage, hash-smoking sets in easily. The 'culture mix' you belong to, will make you try more and more 'harmless' experiments.
Proper guidance is required.
Curiosity of Experimentation is the most common cause. Most drug addicts are male, but there are several girls hooked on the drug too. Most girls on the drug are persuaded by their boy friends to try it. Few try it out of frustration. Beware of Drug peddlars who usually operate from 'Joints' which are mainly in the economically backward area.