There's been plenty of evil done by do-gooders, who are so certain in their rectitude about what's best for others, that they feel justified in imposing that rectitude upon them.
I can’t hit people with it, I can’t transport it onto private property, I can’t use it to yell all night, I can’t sell organs, the list is endless.
Anything we do, we do with our body, and every law ever applies to what I do with my body. The question is: do we think the costs of law the restriction outweigh the benefits? You may think so, but you have to argue for it, you can’t just invoke a principle which has never existed.
In case you aren't, being able to do what you want with your own body does not include a right to harm others. Remember, we are talking about ingesting drugs, not hitting other people.
Is there a point at which drug use should be considered antisocial and unacceptable?
You have to make the argument that drug use doesn’t harm others. In a libertarian thought experiment maybe it doesn’t, but in the real world it does.
In particular, we tend to criminalise behaviors that increase the risk of harming others. Consider drunk driving. Nobody is harmed if I don’t have an accident. But the risk of an accident increases, so we criminalize it. The same is true of hard drugs. The probability I will harm others conditional on meth addiction is higher than the background probability.
I also said nothing about do-gooders. I never said I supported do-gooders. What sorts of legal measures ought to exist is a prudential judgement. In this case, it's clear that drug use should be criminalized.
> The very idea that you can do absolutely what you want to yourself is incoherent
You being confused has nothing to do with the idea.
> That annihilates all morality.
Your morality. Not mine. Here's where you learn morality isn't really a tangible thing, and everyone disagrees about what is moral.
Morality is something different from what laws are, rights are, and what crimes are.
> I never said I supported do-gooders
Imposing a moral code on others is what do-gooders do.
> Imposing a moral code on others is what do-gooders do.
Is murdering people fine then?