People would have been less hung up on sexuality as a way to self identify. They would have been more interested in immortality - which literature and song is. When a young soldier knows his chance of surviving a campaign is slim, who will better to memorialize you in song or epic poem than the one you took a spear/arrow/mace for?
The Klingons are invested in epic poems of heroism for the same reason, I think. They're always about the glorious battle - which I interpret as the glorious death which will be remembered as a sacrifice for the Klingon people and the Empire. As a people less interested in education/literacy than glorious exploit the best way to perpetuate that is song because it uses rhyme and tune to cement the words in the bearer's head.
The Klingons are invested in epic poems of heroism for the same reason, I think. They're always about the glorious battle - which I interpret as the glorious death which will be remembered as a sacrifice for the Klingon people and the Empire. As a people less interested in education/literacy than glorious exploit the best way to perpetuate that is song because it uses rhyme and tune to cement the words in the bearer's head.
. Spock and Bones appeared to be more of being buddies, just look at all the banter and snipes at each other, now that could be considered a form of latent gay feelings for each other.
