[mcmoor]

Other replies have mentioned the positive reasons why smoking declined, and I'd like to believe that because I want to imitate it in my country. But in my most skeptical heart I suspect it's because of marijuana and vape instead. I haven't researched further to support this hypothesis but the first Google hit I get looks confirming.

[astura]

The decline of smoking started long before vaping existed and weed was popular. Smoking peaked in the US in 1965.