Normally, I'd agree wholeheartedly. But sometimes newer programs, with their many improvements and added features, cut out the very feature that you relied most upon. Or they change the way a program operates in undesirable ways. Having learned word processing with WordStar on early 80's CPM computers, I was once a whiz at using keyboard shortcuts to do most any formatting I would ordinarily need - and remained so through several generations of Windows word processing programs. Word 2010 offers me more options (darn few real enhancements for most users, though) at the cost of a complicated menu structure - result: reduced productivity.

Also, I'm not a gamer, but when my kids were small (they are now 30 & 28) we would play 4x4, Snake, Amaze (generated multi-page mazes on dot-matrix printers), and several logic games from 5.25" floppies. Though I've saved all these games, I can't really play any but the logic games. 4x4 used primitive graphics and looks hideous on new systems, and for Amaze, I no longer have a dot-matrix or even a parallel port to attach one. Snake was designed for a 4.77 MHz Intel processor on early IBM's, and was too fast to play when computers hit 100 MHz. On my current 3.8 GHz, the game is over before you can even react to the first turn.