I'm saying that legalizing it opens the door to greater control over what a person does and where he goes by the government because now they will have better reasons to monitor them and curtail certain activities based on their possible mental state. They can only do that if they monitor you all the time. You can already be tracked by your cell phone. At some point a drug user is going to kill some one in a car and that is going to spark an outcry. It may take a while but your real freedoms will be curtailed yet again. On top of that someone has to pay for it and that person is usually the taxpayer.