Well... I'll make an assumption here:
We are of a generation of gamers who were there for the genesis of both the games and the industry. It was exciting for us wasn't it? My god the number of computers and upgrades I did to play the latest game...
I still have one of these. I've held onto it for the day I want to play the original Unreal.
Pretty sure that day isn't going to happen. But just in case.
It's the same reason I hold onto a couple of Dakota based PPC MAC prototypes.