There was a report out this week which suggested that cannabis could bring in £1bn in taxes if regulated, as well as freeing up police time.
I'm all for it. It seems to be working in the American states that have done it.
Just on the financial aspect it's a no brainer, bring in extra revenue, cut expenses with the current inneffective prohibition, reduce black market/organised crime income.
Even then when weighing it up on what social harm it would do, the negative effects would be negligible, especially when compared to the social illls of our favourite legalised drug, alcohol.