Although the trains do seem to be pretty uninteresting in terms of destination, sometimes the journey is pretty interesting even if it seems mundane. While I still don't have the photos yet, I got to tag along on a freight run on a short line back in December that more or less parallelled a road that I travelled frequently as a kid. And just like everyone said, it's amazing how when you get just off that road the whole landscape changes.
If anyone has the chance, I'd definitely recommend doing a freight trip, it's certainly a different world than airport lounges and the world on either side of the curtain...