Marketing genocide?

Not so long ago I have seen a film (Detachment, 2011 with Adrien Brody to be exact), where the main character posed such an affirmative. We all are living in marketing genocide, he said. Of course, it was an inevitably figure of speech. However, the doubt of whether marketers contribute to the well-being is posed. I'm sure that everybody from marketing sooner or later faces such an attitude towards him or her. So the question is whether marketing is worth to be a dignified career path, or it rests on a hopeless trickery, aimed at selling of useless things. Please, do not underestimate such feelings: they are much more popular, than is usually admitted.
First of all, why marketing might be of importance for any people around?
There must be a reason of being beyond anybody's will. The answer is very simple. In free economy, marketing serves as a system of planning of supplying goods and services. Marketing therefor plays a role much similar to what centralised planning system had once performed under the communist rule over Eastern Europe. Quite different mechanism plays for the same purpose. So marketing should support changes and transactions throughout entire economy. We all benefit from the transactions as they supply us with goods, jobs, and eventually - money. Development of marketing should lead to a further development of economy because of arising quantity and quality of transactions. To a big surprise at the early stage of marketing at the beginning of 20th century there had been clearly stated that marketing should pursue two types of goals. One stands for prosperity of an enterprise, while the other - for the well-being by supplying goods and providing the best practice of service a variety of needs a particular member of society might have.
Next time when dealing with customer let us think whether we provide a foremost contribution to the well-being of the community.  Because of marketing we have job, even far from its scope as do the most since everybody take part in changes. Because of it we could enjoy leisure, stuff our house with things we want and so on...