It really was a good game - IMO it was the best free-roaming game ever made, probably the most true to the old Elite games and stuff must have been. If you want to get an idea of it, it's pretty much Serenity and you're a pirate instead of a hauler. In game terms, it's like a single player EVE online.
Unfortunately the very long pace, lack of random events or any "jobs" that you could pick up in between the main story (I didn't find anything) really killed it for me. That, and I gave up on the SP JUST when it started to get interesting (after a warm up phase of almost 10 hours or something), because after playing for the last 2 hours of traveling between points and picking things up (not even doing anything exciting, just kind of droning on, selecting nav charts, etc), I died due to some random freighter jumping on me and getting a lucky missile off.
Bam. Dropped back to nearly 2 hours of gameplay ago because I didn't save (because you can ONLY save inside your main ship).