The gains are huge, because we are talking about topics like: Reducing heart and lung diseases, Reducing breath symptoms likes cuffing and/or lack of air. It also allows us to save money that we would use to buy cigarettes and lighters.
Also, it allows people to be more informed about the challenge of quitting to smoke. What today is extremely difficult, can become a little bit more easy with the right information.
Last but not least, It’s important to understand that the topic of tobacco has a lot to do with the culture of each country.
In Portugal for example is extremely common to see people smoking, and you even have zones where you can see 10 years old kids smoking (in specific days, because their village is having a holiday). We don’t feel pressured by society to stop smoking. We can’t say the same about other countries: In London, in order to buy tobacco, I had to go to a small store and ask the guy behind the counter for a pack of cigarettes. The cigarettes were behind him, on a “secret compartment”, and the packs don’t have any kind of design whatsoever, the only difference between the packages is the brand name, otherwise they would all look the same. The way people speak about tobacco in London, gave me the clear impression that smoking is not well seen by the citizens.