Views: how addictive are drugs?

YouGov updated its public surveys on How addictive is cocaine? (74% think it very addictive), How addictive is cannabis? (40% think very addictive, 36% fairly addictive), How addictive is heroin? (92% very addictive), How harmful is cocaine to people who regularly use it? (60% and 26% very and fairly harmful) and How harmful is heroin to people who regularly use it? (92% very harmful).