[Supernatural]

Marijuana is non-addictive. But I know that you know that.

You know the truth.

[Lady Jag]

There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. When there aren't enough criminals, one makes them. One declares enough things criminal that it becomes impossible for men to live without breaking laws. Who wants a nation of law-abiding citizens? What's there in that for anyone? But just pass the kind of laws that can neither be observed nor enforced nor objectively interpreted - and you create a nation of law-breakers - and then you cash in on guilt.

[Mojave]

Symptoms of Marijuana Addiction:

1. Marijuana tolerance: Either need for markedly increased amounts of marijuana to achieve intoxication, or markedly diminished effect with continued use of the same amount of marijuana.
2. Greater use of marijuana than intended: Marijuana taken in larger amounts or over a longer period than was intended
3. Unsuccessful efforts to cut down or control marijuana use
4. A great deal of time spent in using marijuana
5. Marijuana use causing a reduction in social, occupational or recreational activities.
6. Continued marijuana use despite knowing it will cause significant problems.

Marijuana is both emotionally and mentally addictive. Once an individual becomes addicted to marijuana it develops into part of who they believe themselves to be.

http://www.addictionca.com/FAQ-marijuana.htm