Like it or not, there is a massive market for drugs and many people enjoy them without coming to any harm, some even going on to become presidents and prime ministers. Just as with alcohol, there are casualties – although rather fewer with some widely used drugs than with booze. But as one country after another is starting to realise, the best way to protect users is not to create a lucrative black market controlled by lethal gangsters with little concern for the safety of customers. It is to do precisely the opposite: legalise and regulate the use of drugs.