Say we legalize all drugs. Would this be beneficial or detrimental for our economy? Due to the fact that a lot of people and businesses are supported by drug money, it could marginally be worse for their livelihood. Additionally, access to harder drugs would inevitably rise. However, many lives could be saved due to a decline in drug-related violence. How does one ethically make the decision of drug legalization when there are so many implications?
Ethically is quite the qualifier for your question. It is entirely reasonable to say that morality is not dictated by the law of the land, but the moral law of God that he has written on our hearts. There are plenty of things that are legal, but Christians know to be immoral. Alcoholism is one of them, but would Christians really want alcohol to be made illegal? I suppose at least some Christians in the 1920s thought so, but did the anticipate the reign of terror that the mob carried out in the 1920s? If they did, I wonder if they would have wanted prohibition in the first place. The way that I support drug legalization is by saying that, on the margin, more lives are saved/restored. It is not a declaration of a blessing of the activity, in fact it is important that I also declare that consuming drugs is a horrible idea, and ruins your life and the life of those around you, but ultimately, making drugs illegal results in more brokenness, not less.