Spoon - the gov't has a right to intervene when it can be incontrovertibly demonstrated that the gov't can make a better decision than you otherwise would, or could.

For example. Some people think it's ok to text and drive. Some people think that they are perfectly able to maintain focus on the road, and their phone. Some people think it's a worthwhile risk to send a text while moving 2 tons of steel at 70mph.

Those people are wrong. No matter what they think....the incontrovertible fact is that texting and driving is dangerous not just to you, but to other people on the road. Therefore, the gov't is totally within its rights to make a law banning texting and driving.

When you take a flight, do you review the maintenance records for the plane? Do you review the pilot's history? Smell his breath for alcohol? Or do you just go on orbitz and buy a damn ticket? Most people don't have the engineering or aviation knowledge to determine if a plane is safe or if a pilot is qualified. Therefore, they are unable to make informed choices about which planes to fly on. So, it falls on the government to ensure safety by enforcing maintenance standards and pilot licensing.

In the case of drugs, spoon, they are addictive. Addicts are unable to make sound decisions regarding substance use. The substance removes personal freedom. Therefore, the government is right to stop it.