I grew up in the pre-CD era. In fact, I began my life as a music enthusiast listening to Billy Joel, the Commodores, and Simon & Garfunkel on 8-Track. I spent my allowance on 45's and actually know what this is for:
So, for me, throwing away a CD seems kind of odd, despite the fact that, for a while, I got junk AOL CDs so often that I had to find a way to use them in art projects because I couldn't bring myself to throw them away. Despite the fact that CDs are already obsolete because of MP3s and other new music formats. Finding them discarded by the road is just .... weird. Even now.
I guess I'm getting old. :)