Earlier quoted context omitted.
I smoke, but this is dense. Smoking the natural substance is an unnatural use, by that use of the word. “It grows from the earth” Yeah so does hemlock.
So don't smoke. There are other ways of consuming with out inhaling the aftermath of burning. Yes, I know the effects are different in how one is affected. The smoking of anything has always been a curious "ritual" to me as it is so against everything the body is made to do.
I don't find it far-fetched to assume that an affinity to fire was selected for over the last millennia. Why, we even have a mutation that makes us less susceptible to carcinogens in smoke compared to other mammals. That would make smoking, and smoking indoors, an activity that replaces the open fires we're accustomed to.
Standard disclaimer for evolutionary theories: They are ill-suited to determine social policy.