Captain Kirk had to be so macho because the Federation was inherently feminine. TheFederation was the original sensitive man. Even in the late sixties the audience wouldn’t have accepted that sensitivity if there wasn’t this tough guy captain to distract them. The Klingons were the old fashioned males. Brutish, but in an attractive way. This was all reflected in the design of the two ships, the Enterprise and the Klingon battle cruiser. But subtly. They always made sure the ships never got too close together in those shows. They kept their distance. All those phasers and stuff, long distance weapons. No real contact. Because if you put those ships together, no matter how. The Enterprise with its engines spread apart behind it. The pointed nature of theKlingon cruiser. It all looks sexual. There’s no doubt.