I've never heard that said about any drug - although I and others have correctly said that alcohol is a drug whose effects can be compared (NOT equated) to currently illegal drugs.
It's MY body, I am not hurting anyone else"
More accurately, the hurts done to others are not government's business to prevent - with the exception of parents who drug themselves into inability to meet their responsibilities to their minor children, a problem that does not appear to be properly addressed by banning all drug use for all adults including childless ones.
"I can quit any time, I'm not an addict..."
Some addicts tell themselves and others this as a lie - and non-addicted users say it truthfully. It's not "impossible to inform" people about the reality of addiction ... there are many people in 12-step programs who are ready to tell their stories.
the distribution and use are glorified by award winning shows.
I've never seen one - have any examples? I have seen the award winning show Breaking Bad, which presented the drug world in a quite negative light (and correctly so).
That it is just like or no worse than alcohol? The pro-pot lobby has worn that angle out.
More accurately, the hurts done to others are not government's business to prevent...
But railings are put in high places to keep people from jumping off and injuring those below them. We have volumes of laws about not operating motor vehicles under the influence of a number of debilitating substances. Where is the intersection of a person's 'right' to get messed up and the expectation of the rest of humanity to not be endangered by that? (Serious question, because that can cover a lot of ground on a lot of levels.)
At any rate, the fallacy was what I was pointing to. If you don't believe me, imagine your little princess on Meth. Everyone affects others through their actions, even those who imagine themselves alone.
It's not "impossible to inform" people about the reality of addiction
You can bombard them with reality. Getting them to listen is something else.
Breaking Bad is probably the best example. It didn't start showing the drug world in such a negative light (or the main character would not credibly have become so involved). There, too, there is a question of focus. Some people will focus on money, power, short term gains, and not long term losses. It is a question of what people are looking at.