It is certainly not important to read the newspapers but many times it helps you to get many information for your day-to-day requirements. You could get information from alternate sources like internet, radio, tv etc. but may not all at one place. Also, many people feel that hard copy of news in his hands provide better convenience to read than reading from laptops, tabs etc.
Other reason is some people are getting habituated with newspapers and once they did not get he feels incomplete for rest of the day