I am a smoker and smoking is burning substance breathed in to be tasted, nasty habit Im trying to quit
That is not a good habit to have.
In some cultures smoking is part of their rituals but is a hard habit to break for me
You should quit it will save your life.
I agree smoking has horrible negative health affects and can kill 
I have never smoked in my life.
Smoking is very bad and damaging to respitory system
Yes, that is the main reason I do not smoke.