Well I have not the time nor the will to fully go into this just now, but I can simplify the concept for a sec, but if you take the "golden rule", that all the commandments and all law law rest on loving god above all, and loving your neighbors as you love yourself, you pretty much have what god wants right there, because if you adhere to that simple principle you will not break any of the ten commandments, and if God the father sent Jesus to us to redeem us and make a new covenant, because he loved us and he saw we could not live up to the old one, then you arrive at the point of understanding that all the bizarre laws in the old testament are largely irrelevant, save for the basic precepts, ie. the commandments and such. It is also quite conceivable as many have theorized, that many of the old laws were to protect the people. For instance, eating swine, back in those days could do VERY nasty things to you, but in this day and age, that is no longer the case. Times change, circumstances change and I think it can be logically deduced that God wants our best, yet understands this and allows for it.
It is VERY debatable whether anywhere in the bible is says homosexuality is wrong in as much as the concept of a "loving gay couple". Many theologians believe that the scriptures referred to male on male rape, molestation, and victimization, and not voluntary acts. Regardless, if one follows the teachings of Jesus it would not do to be preaching fire and brimstone to gays. It may be acceptable to offer a solicited opinion on the acts they engage in, but condemnation of any kind would be sinful. We would be called on to love our brethren, sin or no sin. We are not expected to accept behavior that harms us or others, nor not to punish offenders in our society, but we are expected to try to forgive. It is also argued by many theologians, that if indeed God considers consensual homosexual relations to be sinful, then if so it would be a relatively minor sin at that, and certainly forgivable. The bible is not black and white. If it was the infallible word of God, there could be no deviance in translation. Even if there was only one translation, it does not mean that any two people or groups of people would understand the Scriptures to have the same exact meaning. All we can do as humans is our best, which will always fall short of perfection, but that is why Jesus gave the answer that he did when asked about the greatest commandments, because basically if you can earnestly and consistently strive for that, you cannot go too far astray.
Oh and one last thing. Of course gays can use power of attorney, but it would be easier and cheaper for them if there was a standardized format for civil unions. It would be, in my mind, unconstitutional to deny them that.