How is picking up a dime, a nickel, or a quarter any different than pickup up a penny off the ground/floor?

I picked up a penny yesterday, from the floor. I think it was heads up, can't remember, so that usually means good luck, but, it makes me think of the phrase a penny earned is a penny saved. I didn't earn the penny, I found it, I know but, still, same diff.

There's talk of getting rid of the penny. So, how is this any diff. than picking up a nickel, a dime, or even a quarter. It's all change, anyway, that's been dropped, or something. So, why is it such a problem with the penny?

How is picking up a dime, a nickel, or a quarter any different than pickup up a penny off the ground/floor?
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