Why should marketers and advertisers study consumer motivation? How does this knowledge help them to do their job?

    I think the the purpose of marketing is to sell more goods to more people and make more profits". This is the basic principle. If the marketers and advertisers want to do this, I think they should study consumer motivation. This knowledge can help them to understand and predict consumers’ buying behaviour. For example, consumers maybe want to buy discounted goods during the department stores’ anniversary. Or, consumers usually love to buy some goods whose price is end of 9, such as NT$49, NT$99, NT$199 and NT$ 299 and so on. After having this knowledge, marketers and advertisers can help themselves to make better marketing decisions for profits. They can analyze the various factors, and change the total buying behaviors.