It's kind of neat to consider "the last copy" of software. The internet trains us to think of software as ephemeral, but eventually this disk will perish in a fire, and it turns out nobody can find that zip file they made of it 20 years ago, and any shareware FTP dumps have long since 404'd.
Maybe some day there will be an e-Indiana Jones, hacking his way into servers booby-trapped with archaic malware, looking for a copy of Pong.
I found the complete collection of Netscape releases in English and German all the way to the last 4.x versions, some Chinese service packs that were lost, old versions of the JDK, the JDK 1.0 beta 2, tons of 2001-ish Apple freeware/bugfixes, etc, etc...