I am a Christian, and although people may call me crackhead and delusional/illusional for it, I wish and aspire to conform to God's will and desire...
The thing is...however, the human situation is extremely complex and it seems that God is aware of it more than anyone else...like when Jesus told the adulterous woman, after protecting her from the people who wanted to stone her, something like 'I do not judge you, so go and do not sin again.' Then, Jesus went ahead and payed for the price of everyone's sin, including the adulterous woman's...
Another example from my personal experience is when I left my former church (I felt that I totally didn't fit in...but I do appreciate my experience there), although it was a difficult process, and could be viewed as a 'sinful' act (you know, not obeying and leaving your church...), I felt that God understood me and was supportive of me all the while. I felt that God was aware of my 'complex' situation.
Now, I'm not a theologian and I don't know the Bible very well, but I have been told that it is clearly stated in the Bible that God is not affirmative of homosexuality. But before I make a judgment, I would like to remember a piece of wisdom I learned from a pastor's sermon. (I think it was from a sermon CD by Dr. Timothy Keller. He's a great preacher by the way. I would highly recommend his sermons to anybody interested in Christianity.)
And it was that everybody lies but when someone else lies we don't hesitate to call them a liar, whereas when we ourselves lie, we acknowledge that we are complex human beings...
I think same view can be applied when I view homosexuality. The situation is complex and I would be arrogant to say that I have the ability to grasp it fully and make a judgment... Moreover, Jesus didn't judge the adulterous woman, which means He didn't judge homosexuality either. Then who am I to judge? Even if I accept that the Bible views homosexuality as sinful when I think about all the sin that I committed, and think about my own sinfulness, and how I was pardoned through grace...then I am left with little room to say anything.
Yeah, all this is based on the Christian doctrine so I suppose that many of you don't buy it.
Another view of mine is that, I acknowledge how extremely difficult it is to actually find a partner whom you are able to share your life with. (at least, it has been so with me) I wouldn't easily say that someone should not live with their partner or leave their partner because they are of the same sex. Of course, living together is different from marriage...hmmm...now that I arrive at this point I feel like I've been beating the bushes all the while....
Anyway, this is how I would view homosexuality regarding my spiritual/religious side...that is that I would not make a judgment.
And personally, if I didn't have a Bible to ponder upon, I wouldn't find a problem with same-sex marriage...athough I am heterosexual...why shouldn't you and I live and let live...
(Oh, and there's another aspect to the whole issue that I would like to mention...that sexuality can get very destructive...spiritually, emotionally, and physically...whether it be homosexuality or heterosexuality it can be dangerous to treat it lightly...that's why even if within my own mind I feel there is no problem, I choose to resort to the Bible...)