If you have good credit and a good paying job, then you will be able to buy products and services at much lower prices then if you didn't have these resources. There are millions of American families that are at or near the poverty lines and are just barely making it from paycheck to paycheck.
Some of these people make too much money to receive government assistance, and too little money to provide for all the needs of their family. There are several businesses that cater to these individuals, but charge high prices for the financial products they provide.
There are a great deal of financial services that some people can take for granted because of the credit rating they might have. Although, for people who don't have good credit they have to pay a higher cost for the same services. For them, it becomes a vicious cycle, of credit debt and working just to make minimum payments on their bills. Thus struggling for several years just to try to pay back the debt they have accumulated.
Below are a few examples
If you don't have credit or a credit card, you are pretty much treated as a second class citizen in today's society. For example, if you don't have a credit card you will have problems renting a hotel room or a car. If you don't have credit, you will have to pay higher interest rates for things that you want to buy.
Some of the problems are: