The Times minimizes the need for Saturday delivery and glosses over one of the biggest culprits for the U.S. Postal Service's financial troubles: the responsibility for retiree benefits. The Postal Service is required by federal law to pre-fund retiree benefits, a burden that isn't placed on any other organization and costs it billions of dollars a year.
Not everyone uses email, and the private delivery companies are much more expensive than the Postal Service. It seems there is a push to privatize every possible service run by the government.
Agreed: The U.S. Postal Service doesn't exist mainly to provide jobs. But providing pretty good jobs is an excellent reason to maintain the service and six-day-a-week delivery.