Marketing courses are very important

Marketing courses are very important for anyone to take if pursuing a career in business.  For a business to make money they need to sell a service or a good.  In order to sell the product they use marketing to help sell the product.  Every form of business uses marketing to promote their good, services or idea's.  Healthcare providers, companies that produce or sell goods, for profit and nonprofits, and even government agencies use marketing to promote what they sell.  According to Marketing Express 50-60% of a buyers dollar goes toward marketing costs, so marketing is a huge portion of everyone's life.  Even as a consumer you should know the basic's of marketing since a huge amount of your money is spent on it.
Do you think too much of consumers money is spent on marketing?