...that they want, would be harmful to society.
Take legalizing all drugs for instance. It would be fine if the logic was as simple as people should be able to do whatever they want to their bodies. It's not. It would negatively affect people who would not be taking them. Society as a whole would suffer.
So you're saying that if drugs were legal then people could get them and cause a lot of harm? We would have the problems that we do not have now because since as they are illegal of course no one can get them, so we don't have to deal with that.
I see your point...
Now, let's discuss the damage that the War on Drugs does to our privacy, how it destabilizes governments across the world, and how it funds organized crime as alcohol did during prohibition...