Apparently, Noctis is gay (according to Nomura)

[Elpizo]

I'll use it again, and I don't give a damn if you say it's just an argument I cooked up: if Versus XIII had only guns, I wouldn't play it either. It's called being very picky. And that I'm very picky, I'm aware. Some things you don't like but tolerate, others you don't like and stay away from (in a game only). Noctis being gay is one of those things. Gameplay only being about guns is one of those things. The entire game being pink is one of those things. The entire game being dubbed in dutch (my mother language) is one of those things. It's what I am and how I do my stuff.

I'm sure you have quirks others would call 'pathetic' too.

Had anybody but Noctis been gay, I wouldn't have minded as much, because they're not the main and you're not supposed identify with them. But Noctis is the main and I'm pretty sure you're supposed to identify with him. If he's gay I can't do that, and if you can't identify with your main character, it takes the joy out of your story. It's why I don't mind all the travesty and gayness in One Piece: they're not the main characters, so you're not as much suposed to identify with them.

I suppose you could say "But Lightning's the main in XIII and she's a woman! Can you identify with her, huh?!" No I don't really can, but XIII isn't Lightning's story, it's the entire cast, and there's no real lead. That makes it easier.

Furthermore, I tend to accept what Loony Bob said below, that if Noctis being gay was just a little detail and not really important to the story, I wouldn't be bothered as much by it (I'd still wouldn't be able to identify with him, but maybe I would give the game a try if I heard that the rest of the story and gameplay were awesome). But given the series' history with romance being central to the plot, I doubt this would be the case.