Rather of taking in oxygen in the morning, a buddy of mine smokes carbon monoxide. Upon questioning, he asserts that smoking first thing in the morning is a more beneficial way to begin the day.
When you ask a smoker while he is indulging in such act, they have so much to tell you about their reasons for smoking. Some say it gives them inspiration, some say it makes them not to to think of their problems and sorrows, as if they will be free from such after the light goes off. I have witnessed some smokers who go to defecate while smoking and according to him if he doesn't indulge in that while defecating then he won't be able to pass his waste. So you see that the government has a role to play in this by regulation how people can smoke because it also has some health challenges like you have mentioned.