I disagree - I think that it should be completely legal to sell cocaine drinks as long as you inform the customers that the drinks have cocaine in them and I think that is should be legal to use even the most psychologically manipulative marketing techniques imaginable. I would rather that it be the responsibility of consumers to avoid getting addicted than to use government power to ban things. Similarly, for example I think that it should be legal to sell skateboards even though people sometimes injure themselves while riding them.