The explanation about the purpose of man on earth is necessary for those who ask for such purpose. Others do not they ask because they do not think that man has to have a purpose on earth. Have you asked yourself "why do I ask?", If so, probably have one of the thousands of responses you get. If not, then it is not explained simply because there was no question. In light of the foregoing how can we answer the question: Why can not I stop smoking? ? – Because it is difficult ", – & nbsp; Because I can not contain the urge to smoke-& n bsp; – & nbsp; Because I am irresponsible with me, – & nbsp; Because the social environment does not allow me" – & nbsp; Because I can, "& n bsp; – & nbsp; Because I need a cigarette-& nb sp; – & nbsp; Because I have no willpower, etc.. Note that these responses have the following characteristics: 1 .- They are all logically acceptable 2 .- They are the explanation of smoking 3 .- They refer to specific conditions or non-controllable environment .- All four refer to the past that immediate or are logically acceptable shows that we can explain the phenomenon of thousands of forms and suggests that there is little point doing so because smoking is still laughing at us as if to say "tell me as you want but still in force." Moreover, the answers are formed in the explanation of smoking means they are also the justification that it has to stay consuming cigarettes.