I think in a society where government is involved in funding health care and other social services, the argument can always be made in favor of legislating against things that have negative health impacts.
Maybe it is none of my business if you shoot heroin. When you want to kick, and show up at a publicly-funded methadone clinic, to the extent that I am supporting the clinic with my tax dollars, it becomes my business. I am suffering a net harm in being taxed because of your bad choices.
The other point is the degree to which you can separate theory from practice. Maybe, in theory, legalized prostitution would reduce street walking, and there would be fewer used condoms lying in the gutters in front of my business scaring off the customers. But if instead, the legalization of prostitution removes a barrier from its practice, so that the number of used condoms goes up, and the police can do less about it because the prostitutes are acting legally, I have suffered a net harm. And by being forced to clean up the used condoms to retain my customers, I am subsidizing bad choices by someone else.
You can try, if you like, to re-introduce legislation regarding (for instance) prostitution, and try to confine it only to certain districts, or only under certain conditions. But then you have still increased availability, and therefore the likelihood that prostitution will occur in ways you wanted to avoid.
Heroin is illegal to everyone, adults and children alike. Alcohol is legal only for adults. Does anyone doubt that alcohol is more available to children than heroin? Or that this is because alcohol is legal to some in our society?
It is extremely difficult to draw a line, and say, “Everything on this side is my business - keep out.” Lots of stuff is on both sides of the line, and government keeps pushing the line. Public funding of health care, second hand smoke, publicly funded anti-drug programs - it’s all my business.
Limited government, anyone?
Regards,
Shodan