Taking away pennies may seem minor but it is not. Everything will go up (rarely down)by multiples of $.05
Stamps would automatically go to .45 and increase by a nickle instead of cents when the USPO decides it need more money.
Gas increases go up a nickle at every increase and the suppliers would wait too long before they decide to give you a .05 reduction at the pump. more profits for the oil companies.
Dumping the penny is an excuse to help big business and sneak more money out of the consumers pockets a little at a time.