The net positive argument is deceiving.
The direct costs and externalities to society of smoking far outweigh any benefits that might be accruable when considered from the perspective of socially desirable outcomes (ie, in terms of a healthy population and a productive workforce). Look up numerous studies by the WHO, national health organizations, academics, etc.
20% of deaths are attributable to smoking. The costs to the health system worldwide alone is ~ $1Trillion dollars.
Sure if you care about people living to a ripe old age.
However I was just responding to this
"Smoking has a financial impact on society in terms of higher insurance premiums, public health care costs etc"
Also we were discussing things in the context of vaccinations and effects on other people.
Someone wrecking their health and dying early via smoking doesn't impact on anyone elses health etc.
As for the 1 Trillion. How much would it cost the health system if they lived longer and died of cancer, heart disease or dementia in their 80s vs 60's. People who don't smoke will all die and that will have costs also. Unless that 1 trillion accounted for the difference in cost of someone dying of smoking at 70 or 75 vs a non smoker dying at 85 it is not a relevant stat.
I did not say one thing that would be contradicted by the WHO, National Health orgs, academics et al
People die, generally via expensive means. Fact
Dead people don't collect pensions. Fact
Dead people don't linger in old age homes. Fact.
Find me a WHO study that says otherwise.
Assuming smokers keep their second hand shit to themselves than the costs of smoking to other people is actually a net gain.