Aerowyn pretty summed up my stance on the subject.
The revenue gain alone would almost be worth it if Cannabis was legalized and packaged under Government laws. The people who want to smoke it are doing so and there are hardly any more negative effects than smoking cigarettes.
I've tried it before and I disliked it as much as I dislike cigarettes. Sure, the effects are nice but I have a problem with the inhalation bit and I've never been able to smoke (anything) without almost dying from coughing... Now that I've had a Pnumothorax incident I don't think I'll be smoking much of anything from this point on. That said there are other methods that don't suck as much to use...