Indeed, and those civil liberties do not include the right to do things which harm others. Taking drugs harms others. You know it, I know it, everyone who is honest in their thinking knows it.
Not as much as a drug dealer who thinks you are a cop or trying to move in on his territory. By your logic you are advocating a ban on alcohol as well, I personally know several people being harmed by alcohol abuse.
You men drug use harms the user, right.
The drugs do not harm others....drugs are inanimate objects, not capable of doing harm on their own.
Of course you probably believe the same thing about guns. (Guns harm others)