I think one thing a lot of people don't know now is that back then there was a WHOLE LOT of denial about the detrimental effects of smoking. I think this was mostly the tobacco industry's propaganda, but it worked. I remember talking with someone in the 90s that had some sort of cancer and had been a smoker most of his life. "No way to know if it was the cigarettes" that caused the cancer, he told me.
We are much, much more aware of the downsides of smoking now. The cat is out of the bag.
I appreciate your reasoned approach.