iPod Graveyard

Where have all the original iPods gone?

I have an 4GB iPod Mini. Its not that old and it serves my purpose. However, I seem to be the only person on the planet that has a pre-video iPod. What has happened to all of the people who bought older iPods. Do they just throw them away and buy new ones or is there some sort of iPod graveyard that they send them to?