"Street" selling is the bottom of the chain and can be accomplished through purchasing from prostitutes, through cloaked retail stores or refuse houses for users in the act located in red-light districts which often also deal in paraphernalia, dealers marketing merriment at night clubs and other events, or directly from dealers who have purposefully engaged adolescents (typically). Many users sell in order to fund their own drug use. Although most are in it for the monetary outcome, some view narcotics dispensing and consumption as a means of insurrection and orchestrate it for that cacoethes. They refrain from intensive processing and abstain from umpteen 'business' practices. Although most dealers market to a changeless customer base, these mavericks may be overly advertised on hacker/phreaker/drug/etc. forums and between friends and cohorts.
U.S. Government guide to spending on illegal drugs (http://www.whitehousedrugpolicy.gov/publications/drugfact/american_users_spend/)
U.S. DOJ history of illegal drug trade (http://www.usdoj.gov/dea/deamuseum/museum_illegaldrugs.html) (rather self-serving and biased, represents DEA as triumphant over drugs)
Definitions of drug abuse and addiction are subjective and infused with the political and moral values of the society or culture.
Drug use can disrupt family life and create destructive patterns of codependency, that is, the spouse or whole family, out of love or fear of consequences, inadvertently enables the user to continue using drugs by covering up, supplying money, or denying there is a problem.
Drug testing in the workplace has been a controversial measure, weighing productivity and the safety of the workers and those for whom they are responsible against an individuals right to privacy, but it has resulted in increased public awareness.
The drugtraffic has many benefits for Syria and its leaders, and is also a means of control over internal Lebanese politics, because most of the Lebanese military are or were implicated in this drugtraffic.
Syria's regulation of the drugtraffic enabled the Lebanese and Syrian trafficker to establish well-determined "routes" for the dispatching of the drug, to see that the concerned countries are aware of all their activities, and also to better divide the money.
Technically, a country that traffics in drugs is a country that cultivates annually 5000 or more hectares of illegal cannabis (marijuana) or 1000 hectares of opium or coca.