John E. Potter, the current Postmaster General of these United States, lists Five myths about the U.S. Postal Service. I happen to think the post office is pretty efficient, more so than most people would like to admit. We think otherwise because so many people fib about when they put things in the mail and then blame the post office. It's also a grand bargain that provides an essential service in this country, especially for those who for one reason or another (often, age) are not computer-savvy.
It may cut back and even go away as folks in those category grow fewer in number…but right now, I think it's amazing how much you get for the price of a stamp.