Discussion on question by Crabford: If antimatter were common starship fuel, what could prevent it from being commonly weaponized?

@Crabford You say that starships are readily available to civilians. A starship is a spaceship that travels to the stars. Then you say that antimatter is only used in warp drive which only larger capital ships or specialized exploration ships would have. So how do the starships without antimatter or warp drive travel between stars?