Cigarette laws and pharmaceutical conspiracy

Sure, banning anything where there was once economic activity will eliminate or drive underground that economic activity. But that's the point of saying "more harm than good:" there are other costs to its use (and legality) that are harming the economy more than leaving it legal. Or so the argument goes. I personally don't think that's the case with smoking unless we're responsible as a society for paying other people's long term medical costs. Which in the US we aren't, yet anyway.

The major flaw with that argument is that, no, the harm will be far greater than the good done. I am highly allergic to smoke and have been hospitalized from exposure to even secondhand smoke for extended periods before, but I still support a person's choice to do what they want to do when it comes to purchaseable goods. Am I saying all illegal drugs/commodities should be legal? Yes. Because if they were legal, stealing to fund a habit would no longer happen; the item would be sold over the counter in a cheap and easily obtainable manner with no risk involved when TRYING to obtain the item. If an item is marketable, the item should be legal to trade, and the only illegal commodity should be sentient beings, mainly, other humans. This would not only lower prison upkeep tremendously, it would provide a steady increase in the economy from the addicts constantly sending most of their money directly into corporate coffers instead of the pocket of the shady guy on the corner of the street.

I don't use any substance that impedes the thought process, be it illegal drug or alcohol, but there is no denying there is a market for such things; instead of constantly DRAINING our money trying to quell it, why not reverse the money flow?