Time was that the tribe member who toked up and got eaten by the bear was a benefit to the gene pool, if for no other reason than as an object lesson. Besides, pot heads seldom get into fights. Something boozers might consider...
They are both equally useless, but think of the advantages of all those libs, who smoke anyhow, having a cheap, unlimited supply! They'll be trying to vote on Thursday or Friday... Teachers will nod off in class and perhaps even get a nasty letter.
The teen aged children of baked, liberal parents will walk into traffic, or walk away in disgust and become useful members of society. Mexican drug runners will have to get real jobs, or go back to picking California grapes.
Tell me again where the downside is?