Why keep it around?

My first Apple computer was an eMac, after getting fed up with hours spent maintaining and de-virusing a Windows machine. The eMac was a delight. It turned me into one of those really annoying converts who can't shut up about how dreamy his computing life is now that he's seen the Mac light.

Anyway, the old eMac has since been superseded by an iMac, an MBP, and an iPhone. It's become no more than an oversized paperweight. It still works, but it's an energy hog compared to current machines, and it can't run any OS leter than Tiger.

Is there any point in keeping it around?