Do you also inform them that smoking stinks, is socially unacceptable to most in the US, kills with various cancers?
You are an unmitigated vicious piece of excrement.
Don't really need to, as there are more than enought "tut-tutters" readily available for that task. To answer your question, I did caution them that the addictive and destructive nature of tobacco and other substances have the ability to limit their liberty - on the one hand you are free to smoke a cigarette, on the other hand, habitual use can mean you are unable to not smoke one. Happily for me, both are non-smokers as adults.
Now a question for you. Do you truly not see the tyrannical nature of your position?
They may not do that but they should inform their children to beware of people like you that would control every aspect of their lives for the state.