The problem with comparing smoking to cars or obesity is it does not work at all. I don't go outside and drive around in circles in my car to relax, I also don't drive my car into the house and just leave the engine running while my children are sleeping. The car gets me to work and serves a valuable purpose to society.
We need food to survive, so again that is a lousy comparison. I do fully support schools teaching good nutrition and physical activity in order to combat bad eating habits that people are raised with, but children don't die just because their parents eat too much.
I have asthma as well. I am one of three children. My mother smoked when she was pregnant with me, but not my two siblings. My siblings have never had an issue with asthma. It is super lame that I have to deal with an inhaler for the rest of my life because of a bad habit.
My big problem is you still have a ton of people who start smoking every day. What is that about? It just seems like the drawbacks outweigh the benefits tremendously. I just don't get it.