I'm also amazed at the entitlement of some people. Just because you replace something, doesn't mean that THEY deserve your old one. I have a basic Kindle. It's my second one. My first one was the Kindle Keyboard, and I bought my current one, on a whim, as a refurb., with a coupon from AmazonLocal. So it cost me very little.
I was amazed at several people thinking I'd just hand over my old one to them! What I ended up doing with it, is giving it to my mom, who wasn't even sure she wanted it! I finally told her, take it, play with it, if you don't like it, give it back. Of course she didn't hate it, but she never asked, so I was happy to give it to her.
I am now awaiting delivery (today) of my new Kindle Fire. I've had some of the same people ask me what I'm doing with my "old" one. I told them, they are different (in many ways) devices, so nothing. I'm keeping them both. I won't take the fire to the beach, pool, or anywhere else it could get damaged, so I need the cheaper, more easibly replaceable, Kindle for that.