
After reading these responses, I think I’ve also realized that for gay ships, there is also typically an element of “taboo.” At least for the parings I read, there is at least one character who is not completely confident in their sexuality. So for me, gay ships are far more interesting because the characters are choosing each other DESPITE it not being the easy choice. Straight ships do not typically have that hurdle, and therefore, don’t have that choice/declaration of love
It does come down to how the woman is written with this but straight ships are often written just. So formulaically to the het romance genre in general, like a man who’s protective or possessive or dominating to at least some extent and a woman who’s passive and most of her characterization becomes about the relationship and not her own development. And it’s even more obvious when I see the rare fic of a straight ship that isn’t like that at all.