Nuclear rockets would be awesome. They aren't required for a Mars mission, and if we keep on talking about how much they would help, pretty soon they would impl

Nuclear rockets would be awesome. They aren't required for a Mars mission, and if we keep on talking about how much they would help, pretty soon they would implicitly end up on the "Required To Get To Mars" list. Then, any problems that nuclear rockets run into (say political opposition, reasonable or not) derails a Mars mission.