You didn't deserve to be downvoted for this comment. The taboos may keep these things in place, but we have to ask how the taboos got their in the first place. In the case of cannabis it was largely as a result of DuPont being unable to compete with industrial hemp, and leverage a little racist fear-mongering by borrowing the Mexican term marijuana to make it appear extra dangerous. Take a look at the film Reefer Madness from the 30s to see the ridiculous propaganda that they were feeding to the public.