Ask HN: Should I learn to program old machines?

Often take the time to read the stories of great programmers. One thing I note, especially in Coders at Work, is that they all seemed to learn on an old machine. I get the impression that writing useful software under those constraints shaped their outlook for the rest of their careers.

Do you think, personally, if it's worth setting up an emulator or VM to match old hardware and learning to write cool, useful programs on it?