Why to Study Consumer Behaviour?

Basic objective of studying consumer behaviour is that firm want to know who buys their product. How they buy the product? When and where they buy product? Why they buy product?  How they give respond to marketing stimuli. Because they study consumer behaviour (CB) what Consumer Behaviour is regarding?

Why, How, where and when consumers make purchase decisions? Considers who influences the decisions? What is Consumer Behaviour about? All these are significant questions, which are to be known to companies so that they may design, and implement marketing strategies to satisfy customers. Consumers find out the sales and profits of a firm by their purchase decisions, therefore the economic viability of the firm. In late year 1990, US consumers were spending adequate dollar bills to stretch from the Earth to Sun and back, with sufficient left over for over 600 lines to   moon! Along with these questions companies should also know some other factors such as what Disposable income is and what discretionary income is and what the stage of family life cycle stage is because these all factors affect the consumer behaviours which are very significant to the marketers.