Smoking in restaurants

I think smoking should not be banned in restaurants. Also, I am smoker. These days, some restaurants do not allow smoking. However, a lot of restaurants allow it.some of them sort out smoker from non smoker. Also, some of them do not allow smoking during lunch time. I think these are good ideas. especially, I think seperating smoker from not smoker is a very good idea. Therefore, I want do not to smoke in front of children. My friend said, I want not to damage caused children by smoke. Therefore, I want restaurants to allow smoking.