if you are banning cigarettes because of their addictive effects. Then you should ban every nicotine-based product.
If you are banning cigarettes because of their health effects, then why not regulate other similarly devastating products?
Then I reasoned that law can only do what is socially accepted. Banning cigarette is socially accepted, so they decided to do it.
In the end, it is about social acceptability first, not just addiction or health effects.