That we should immediately legalise all drugs.

To be precise, I'd like to follow the Portuguese model of drug reform; legalising the possession of a small quantity (up to ten days worth) of any currently illegal substance, and offering targeted rehabilitation to drug users, as well as clean needles etc. Following from the style I've seen around this website, I must show that the outcomes of legalising all drugs would be beneficial to society as a whole. Round one will be for acceptance, round two for arguments, round three for argument...