There are good reasons on both sides of this argument, but I come down on the 'keep them' side. For one thing, getting rid of them would have a negative impact, and more of an adverse affect on the poor than the rich or middle class. Lower classes are more likely to save, roll, and spend their pennies than other income groups who may not need them as much. And on a sort of related note, increased prices that would come from rounding prices up to the nearest nickel would hurt the poor and elderly most, as they are the least able to afford it, and generally make more small, cash purchases. For another thing, getting rid of pennies would hurt charitable organizations. Organizations like the Salvation Army rely on penny drives, and pennies collected in the donation conatainers you see at most grocery stores, gas stations, etc.