As a Christian myself, we don't accept gay marriages.. and I think that goes for almost every religion out there including Muslims, Budhists, etc..
That is one of the flaws I think that religion has in itself.. why not let people have the freedom that they should deserve? A debateable topic it is, if people were born homosexual or they turned into one, they still have the right to do whatever they want. Now this may seem like "oh then people should have the right to kill!".. No. Just no.. I mean it's common sense, people should be able to understand what I'm trying to say. In my opinion, gay marriage should really be allowed (I'm not gay, don't think I'm saying this because you think I'm gay) - wait, it IS allowed, it's just not "accepted". But yeah, people have to understand and step into other people's shoes and go through what they go through every day.