Once upon a time tobacco was growing in fields all over the world, and it even has a firm root in the early history of the United States. Of course, back then people did not understand the potential dangers of tobacco and instead simply enjoyed it for the relaxation and other benefits. Tobacco quickly became quite popular, especially when movie stars, celebrities, and other figures on television started pushing them in advertisements. Once we started to realize the potential dangers of smoking, however, things started to move in the other direction as you can see here.
The bottom line is that tobacco is now highly regulated, as countless studies have found that tobacco cigarettes include toxins that can directly lead to lung cancer and other problems. Many people still enjoy smoking and will not let the risks deter them, but the government wants to be sure that anyone who smokes is fully aware of the potential consequences. This is fairly important after all, because smoking can be highly addictive so if a person starts the habit before knowing the dangers, they may regret it later. This started with warning labels on all of the products, which helped to keep people from making uninformed purchases.
However, it has expanded to things like increased legislature about banning public smoking, as the risks of second and third hand smoke are now being studied even more closely. Of course this is not the case all around the world, as many countries still greatly accept smoking, whether for tax purposes or general purposes. However, in countries where smoking is quickly becoming less and less acceptable, many people are looking to smokeless product options like chewing tobacco and healthier alternatives like vaporizers. Ultimately with such pressure, it will be interesting to see what happens to cigarettes moving forward.