Nowadays, smoking is not "just smoking". It is more matter of person branding. It shows to which group you belong, what you do in life, etc.
At the very basic level, you can hardly tell the difference between various ciragarette brands. What matters is what signals pop up in your cousciousness when you are just about to buy cigarette pack. It is just about what you want to be.
In fact, the ad firms decide on who and what you want to be. So, you're not yourself anymore. You're just a continuation of the ad you saw.
I'd stick for marijuana. You know why it is still not allowed in so many countries around the world? Don't be mislead by so called scientific researches. Tobacco companies know how to request for the "right" research.
Marijuana isn't brand, and I hope it wouldn't be and I wouldn't see a "MariJ" pack of marijuana filled cigarettes from Philip Morris idiots.
I've smoken marijuana myself about 7-8 years ago, when I was kind of young
But I somehow just switched off to other (non-narcotic) things in life.
Anyway, I just support legalization of marijuana.