Yes gay marriage and homosexuality are a sin. But like all sins, it can be forgiven. There exists no sin in the bible that can't be forgiven by God. Everybody from the moment they were born instantly became sinners. Christians know that that they too are sinners, and that God died for their sins. If homosexuality is considered a sin, then God died for that too. Christianity is founded on the idea of loving one another, and following God. Jesus himself did not alienate anyone. He welcomed EVERYONE, regardless of race, gender, background, social class, job, etc, with open arms.
As for myself, I really don't care. Let people do whatever they want. A guy doing another guy isn't going to effect me directly, and it probably won't bother me anyway. I really could care less on the matter.
but if its a sin don't you need to stop doing it in order to be forgiven? I mean if you are sinning and asking for forgiveness because you realise its a sin then you would want to stop being gay, i mean its going to cause quite a lot of personal turmoil for a person to repress their feelings in order to find forgivness. Or am i way off on this and can you just acknowledge stuff as a sin and then carry on with it and pay no mind to it?
Oh and i'm sure your last sentence was meant to be that you couldn't care less or is there a way that you could care less than what you do already? It confuses me when people say they could care less.