Think about the money you spend on tobacco. Is it a small amount in your daily expense? Many people may say “no”. But for e-cigarette you do not need to purchase everyday. You only need to supply the liquid and it is easy for you to control the amount used. Smokers all know that once the smoke is lighted up, they would let it burn out whether they smoke or not. That is waste and burn money to pollute the air you need. Isn't fool’s action? However, there are a lot of such fools in our life, burn the money to pollute the fresh air so important for them and their loved ones.