The global drug war is an utter failure. It's a waste of time, money and human life, and has done virtually nothing to curb the demand for drug use. It is especially terrible in the USA, where it disproportionately affects underprivileged people and communities. If you care about social justice, fiscal responsibility or civil liberties, help fight to end the war on drugs.
For more detailed info, this organization is doing a great job making the argument: https://www.drugpolicy.org/