There is tremendous social hypocrisy about drug use. Almost all cultures have a history of using psycho-active substances. Most cultures profit from drug sales while condemning sub-sets of non-conforming users. Most drug-use takes place within social groups and serves a common sharing role between members of a group. In these contexts, drug use seldom becomes a major social problem. It is only when drug use becomes detached from its context and becomes a solitary activity that it usually becomes problematic.