@Draugnar
Sorry you got so hung up on verbiage, because you missed the point:
You wrote:
"If what you put in your body makes you a danger to the people around you (try driving drunk or high) then it needs to be regulated.
If what you put in can have serious side effects on your health and force society to foot the bill to try and save you, it needs to be regulated.
What you put in your body can affect others around you and government has a right to control that so your freedom to abuse your body doesn't infringe upon anothers rights."
Banning or regulating, they both stem from the same absurdity. The idea that because it is expensive to allow people to be free -- How much money on elections could we save if we just did away with them? -- that therefore we can limit and regulate that freedom, whether you ban things outright or just restrict them, is really missing the point of why freedom is important. If you take things being cheap to society as your primary interest then your reasoning makes sense, but if instead you take as your primary interest that society should allow individuals to live in freedom (to choose their own interests), then your argument is just trite.
Furthermore, loads of things that might end up costing society (whatever the hell that means) are also to the detriment of the people who do them. Not wearing your seatbelt is probably the best example. You do not need to punish people in for not doing it. If people are rational, all you need to do is to educate them about why a certain thing is bad for them and they'll deal with it on their own. Turning to regulation -- a force that inevitably oversteps its limits -- is unnecessary in many more cases than are recognized, at least in the United States. It's the reason people in Amsterdam aren't all huge stoners. They know that marijuana will keep them from doing other things that they are interested in and might damage their health. They don't need a law to make it illegal, they just follow their own self-interest.