Even though I was raised on fantasy, I never really got into science fiction. While I do read science fiction occasionally, the operative word there really is "occasionally." Even though I'd heard murmurings about Pastwatch I probably would never have gotten around to reading if it hadn't ended up on our book club reading list. I'm glad that I did though because I did quite like it, particularly its unique combination of historical fiction (one of my favorite genres) and science fiction. I decided that I was going to like Card (who I'd never read before) and Pastwatch, when I read in his acknowledgments: "A complaint to Sid Meier, for the game Civilization, which seriously interfered with my ability to concentrate on productive labor".
Though a number of us found the book to be slow going at the onset, those of us who finished it found that Pastwatch got much better toward the end and that at a certain point we became very invested in the story and needed to find out what happened.