Also the idea that anyone is an adult in today's world without some kind of help from society is absurd, just ludicrous. They were educated in public schools (or publicly accredited private ones) ate food made safe by public regulators, drove on public roads their entire lives, use publicly stabilized currency, have courts to address concerns, etc etc etc.
Unless you literally were born in the undiscovered amazon and ate dirt and worms your entire life (in which case you aren't discussing politics on an internet invented and maintained with public funds) you absolutely survived to adult hood based on that society. Only privileged and ignorant man-children can believe that now that they are educated, grown, and have some kind of survival mechanism in place, that they can duck out of contributing to that same society for future individuals. And that ignores the fact that eventually those same people will eventually need healthcare, or help with their families, or some other need that requires a functioning society.
But I learned long ago that trying to argue with a libertarian, especially on the internet, is like trying to argue with a religious fundamentalist based on logic. (but I repeat myself). It's a belief system requiring as much faith as Scientology, and just as ridiculous.
They also never have an answer for how redress for wrongs would work in imaginary libertopia. Today's courts are corrupted by those with money, imagine this minimal system only designed to address physical harm or property theft (that is funded by what? charity donations? lol). And of course everyone would agree to obey it's rulings too. Man, I honestly don't know how anyone can buy into such a ridiculous and flawed fantasy.