Smoking

With everything we know about smoking and how addictive and unhealthy it is for you, why, why, why are people still smoking???? I understand that once you start it is really difficult to quit. But who are all these people that keep starting???? First off, we all know now that it is really bad for you and addictive. Plus, it is gross. And on top of all of that, think of all the money you have to spend on cigarettes once you are addicted. How are people stupid enough to keep starting this nasty habit? How are there enough stupid people starting to keep the tobacco companies in business? Has our society learned nothing from everything we've learned about smoking?