There's also a strange appeal, at least for me, in being able to play around with old games and hardware using far more powerful tools (and more time) than the original developers could have dreamt of.

I also like, sometimes, that we can now own hardware that would have been exorbitantly expensive in its heyday. An arcade machine was thousands of dollars in the 80s, but you can sometimes buy the board for cheap and supply your own JAMMA connector and display. Fun.