The libertarians that I used to hang with were all very big on accepting responsibilities along with rights. They did not want to be forced to pay for other peoples bad choices any more than you do. I believe that you are seriously misstating the libertarian position.
Not once have I seen a Libertarian argue about the consequences. Not once.
(Experiences may vary. Use as directed.)
No, they’re not. Because drug users actions don’t just affect themselves (I wish it would) but their entire family.
Do you honestly think the government is going to ignore child neglect because the parents are stoners?