Penny Pinchers

So, if we get rid of pennies, will we still have penny pinchers? Definitely.  But we'll probably refer to them as tightwads, or cheapskates or other synonymous phrases, until the phrase "penny pincher" falls entirely out of use.  That's the thing about language; it is always evolving.  New words and phrases appear and obsolete words fall out of use.  It's just the way things are.  The same with phrases like "a penny for your thoughts" and "find a penny, pick it up..." and others.  They'll never replace the word in such phrases, and say "a nickel for your thoughts," but the phrase itself will become obsolete and be replaced by another word or phrase that conveys the same message.  There is almost always several ways to say what you mean, and I'm sure hundreds of words and phrases become obsolete each year.  Just as I'm sure hundreds of new words and phrases appear each year.  Language continually evolves; our monetary system should evolve as well.