If a marriage system is included in the game (and I sort of doubt it will be) I see no reason why there shouldn't be same sex marriages. If the near extinction of our entire species, the constant threat of annihilation by alien invaders and the general struggle to survive doesn't get people past all this "worrying about the small stuff"...... Well there may not be much hope for us. If the argument against is "that's not why i'm here", well don't get married to anyone in game. Much the same rules apply in game as in real life. If you don't want to get married than don't, and in the words of Whoopi Goldberg: "If you're against gay marriage than don't marry a gay guy, its that simple". For my own part even if the game allows marriage I would not partake in that particular system. I have a wife, she isn't going to play but I have no intention of saying those or similar vows to anyone else. Even if it is just for fun/pretend/whatever. That does not mean however that I would presume to tell others that they should feel the same (and that doesn't even touch on real world couples wanting to marry in game).