The truth is that people smoke for different reason well from my own little bit of experience…for me then when I was still a smoker i really did help me to less my stress, and most of the time when am feeling cold, and to others it, an habits, or it used to completely clear the mind at some point, and yes some even say "medical" reasons like appetite or anxiety relief. I’m not here to judge anyone’s personal choice.…but from my own perspective but where the real issue lays is adults can make their own choice, but kids can’t so why I would say it not advisable for an adults to smoke cigarettes or weeds in front of a kid, because time would tell….
Smoking is a habit and I believe people make up some stories to make it look reasonable to people why they smoke, but I does smoking do all this things you said here, so that is why a smoker can not go out of the reach of children to smoke right, there are more harmful effect of smoking, of course it is not hidden for smoker, as someone who has been their before, didn't you notice that in some cigarette, it is written boldly that smokers are liable to die Young, tobacco companies do not hide all those things because they know the content of cigarettes, which are tar, carbon monoxide, and nicotine, although there are more of them which I won't want to mention, because those are more dangerous chemicals, why most smokers talk about nicotine is because, it lessen stress temporarily, should that make anyone to expose their kids or other people's children to such, I understand that we have our choices but we should not allow anything we do to control us.