Yeah, totally. And not just in Bioware RPGs where the player character has homosexual 'options' (options I fully took up with Liara). I'd like to see a Zidane/Dagger or Tidus/Yuna kind of story, but between two men or two women. And I think creating a gay relationship "for the sake of it" is in fact exactly what writers should be doing. It's very easy to slip into your default setting when coming up with a story; I'm a straight white man, so I tend to write straight white men by default. So far I've not encountered a situation in my own stories where the straightness, whiteness, or man-ness of these characters were critical to the plot in some way.

So, why not make some of them gay? Or a different ethnicity? Or women? It's good to get into the habit of creating diversity.

I mean, think about it - what if in FFIX, Dagger was a man? How would that have changed the story in any way?