My medical use of marijuana never interfered with my work; I ran a successful business. I told my conservative doctor what I was doing; he did not really agree with it because of the health risk of smoking, but he witnessed my positive results. I was minding my own business taking care of my health and my family. What was I doing to anybody that got me 93 years?" By former Oklahoman Will Foster after his release from prison. He was convicted of cultivating marijuana, used for his own medical purposes.