I recall reading this post a while back and thought it very funny.  It is taken here slightly out of context but still reasonable funny"

"The amount of money you make is irrelevant to whether it is worth your time to pick up a penny. However, other factors may lead you to choose to let the penny remain there. By picking up a penny on a busy sidewalk, you risk being trampled and having to pay much higher medical bills. By picking up a penny whose previous owner you can identify, you may be stealing (at least ethically, if not legally). By picking up a penny on a first date, your date might think you’re cheap, and you’ll miss out on a second date. (Though, if he’s a keeper, he will be thrifty himself and may beat you to the penny.) You may be too tired to pick up the penny; your back may hurt; a child may appreciate finding it more than you would. Any of these circumstances could provide a legitimate reason to let a penny on the ground. “I make too much” is not a good excuse. If you had picked up the penny, you would have made more."

There are some very good resources and links to help you determine the value of old pennies in that giant jar you have under the bed, in the garage, or in that old piggy bank on the dresser.  Check that old penny value before passing it up next time you see one on the street.