I like to make a different point why I think smoking is worse:
Because it harms people (especially non-smokers) who are near you when you smoke.
In Germany, where I live, smoking is allowed almost everywhere where people meet each other (like in restaurants, bars, clubs etc.)
As a nearly-lifetime non-smoker (I smoked about 10 cigarettes in total just to try them out) I don't like that my choices are not to go there or to be poisoned
Besides that I think both smoking and poor diet are equally bad for the person doing this. For the body itself one of them may be worse in the statistics, but for your personal development both lower your awareness massively.
I think no exercise doesn't lower your awareness as much (but it does!).
By the way: I'm a non-smoker with a poor diet and I do no exercise. Plenty room for improvement
