The penny is outdated for use in our coinage that is in circulation. People throw pennies away or leave them at retail outlets in a tray known as "leave a penny - take a penny" It cost the U.S. mint about 2.5 times more than face value to mint a penny today. So here is a way to reduce the cost of government and make life simpler for citizens. Gracefully retire the penny from our circulated currency.
Other countries have done so, such as Australia where they round down or up cash transactions to the nearest dime.