Go back and read, Lonestar. That has been addressed. Yes, we do need it.
Why do we need it?
It's more efficient and held to higher standards. It offers a protection on the mail that is not held by other carriers. It produces revenue. Further, there is no reason to privatize it unless the goal is to destroy the middle class. I have already provided the legislation that was put into motion to destroy it. Lastly, it's in the Constitution.
According to the USPS, it has lost money for 7 consecutive years, long before any legislative action, and revenue isn't profit. Any corp that loses money at that rate, especially a publically owned one with viable private options, should be allowed to fail.
Perhaps paying 2-3 times the going rate for employees is the problem?