Good one, SimoneA - a lot of people weren't aware of the SERIOUS negative effects of smoking when they originally started (anti-tobacco propagandising has only REALLY gained pace in the last decade), and once hooked on Nicotine and the rest of those chemicals, it's a HUGE battle to quit. In fact, quitting smoking without supportive medical care can even bring on psychosis in certain individuals.
It's a lot like people telling alcoholics "Why don't you cut down?" - or "Just have ONE drink" - if you understand ANYTHING about chemical addiction, you'll know that this is naive ignorance showing itself. It just doesn't work that way.
Some people can give up easily - it doesn't mean that they are morally superior in any way (although they would like to believe so) - it just means that their body reacts to certain chemicals differently. Seeing as we don't choose HOW our bodies are constructed and how they react to various stimuli, it's like girls claiming moral superiority over boys (or vice-versa) on the basis of gender and not behaviour - nonsensical at best.
And to equate an addiction over which an individual is powerless with child-abuse, is childish.
Irresponsible behaviour around children - which includes smoking carelessly, drinking alcohol, watching inappropriate shows, allowing inappropriate media to be seen, eating too much, driving recklessly, drugging (including prescription medication), eating junk food (like McDonald's and Kentucky), and even swearing - on the other hand, CAN be construed as such. But the same people who would brand all smokers as child-abusers are rather keen to have the spotlight focussed on smokers to the exclusion of all else, so that their OWN shortcomings are overlooked.
Rather childish behaviour, actually - if YOU (the hypothetical anti-smoker out there) don't like smoking, your immediate reaction is to call for it to be banned, to demonise it, to decry it, and generally focus attention on it. The problem is, no matter WHAT you yourself do, somebody ELSE somewhere doesn't like it, and would like it to be banned - so if you take YOUR behaviour to its logical conclusion, eventually everything that anybody anywhere could take a dislike to and object to, will be banned. What kind of a life do you think THAT will lead to?
C'mon, grow up - smoking is a drug addiction, and smokers deserve HELP, not this unrelenting barrage of negativity and arrogant aggression. You don't treat people with anorexia like that - and they are JUST as helpless over their condition.
Fac ut vivas - Get a life!