I think the people should get their stories straight and stick to them. If you legalize alcohol, which is immediately dangerous in high dosages, and cigarettes, which are dangerous long-term regardless of the dosage: then why not do so with all drugs? Selling them in safe, low dosage portions, and overdosing is u to the individual.
On the other hand, if you illegalize drugs like marijuana on the basis of the damage they cause long-term, and the extreme dangers of overdosing, then why not do the same with alcohol and cigarettes?
I know the answer: Alcohol and tobacco are established drugs that have been in use for thousands and hundreds of years (respectively), as well as being BIG moneymakers for several existing companies. The new Drugs are not established and traditional, and don't make a lot of money legally.
I also know that Tobacco and alcohol are not nearly as damaging as most of the illegal drugs out there (both long and short term), but i'd like to think that legalizing such drugs would ensure that they are not released in dangerous dosages.
The alternative is to illegalize tobacco and alcohol. Either way, i would prefer if one argument can be decided upon, and sticking to it, not the half-assed double standards that exist today.