yes, children just starting out on this noxious habit are a different story. They should know better, and it is probably our duty to tell them so.
I know some people who have such a strong addiction, that even the powerful drugs they use to overcome smoking addiction today don’t help much. It’s not because they’re weak-willed, either, there is something that is physiologically different about them. I am grateful that I have never smoked, and I have been able to give up other bad habits with relative ease, but I realize, from experience, that it is not the same for some others.