I think that's a horrible way to go about life, and I am glad most do not share your outlook and do take moral responsibility for their actions.

I would simply not let my children decide to buy drugs based on what the free market provides

If you'd do that for your children, why not regulate the free market and save everyone's children from the obvious and predictable harm that you can see your ideology leads to?

(if your ideology leads to very predictable harm to children which you need to intervene protect your children from, maybe your ideology sucks).

Unless you plan on keeping your kids on a leash 24/7, best you can hope for is they won't get curious and their friends won't pressure them into it.

There's a reason regulation exists, it's to stop morally bankrupt people from exploiting people. Unfortunately it doesn't go far enough, like with the existence of OF.

Just like society should raise people to know the difference between its and it's. JFC.