In Pirkei Avos it teaches…
Aizeh hu chacham – Ha’roeh es ha’nolad.
It is a well known, undisputed, highly publicized fact what the results of smoking are:
Heart disease, Lung cancer, emphysema, oral cancers, and more horrific life-ending diseases.
These are not speculation. These are “ha’nolad”, – the indisputable results of smoking.
So… if the “nolad” is known and clear for everyone to “roeh”, to see, anyone with any chachma at all, would stay far away from smoking.
Anyone who does NOT, is not only the opposite of a chacham, but has apparently decided that his taiyveh for smoking is MORE important to him than his being around for his children’s weddings or the birth of his grandchildren.
Life is dangerous enough from things that are beyond our control, so to be as blunt as can be…
Anyone who smokes is a SELFISH FOOL.