We banned heroin because it being readily available leads to loads of people getting addicted to it. Even with it being illegal, lots of people still end up add

We banned heroin because it being readily available leads to loads of people getting addicted to it. Even with it being illegal, lots of people still end up addicted to it. No matter your views on prohibition, it's pretty obviously not a good idea to encourage heroin use due to the risk of addiction. Yet we do precisely that with salty sugary foods, with many of them advertised specifically towards children.