In announcing his involvement with a group that seeks a "third way" for American drug policy, David Frum explains why he thinks marijuana should be unavailable even to people who can use it responsibly:
The goal of public policy should be to protect (to the extent we can) the vulnerable from making life-wrecking mistakes in the first place.
There's a trade-off, yes, and it takes the form of denying less vulnerable people easy access to a pleasure they believe they can safely use. But they are likely deluding themselves about how well they are managing their drug use. And even if they are not deluded—if they really are so capable and effective—then surely they can see that society has already been massively re-engineered for their benefit already. Surely, enough is enough?