I understand your point. Being a gay judge, if he had excused himself from hearing this case, another judge would have taken his place. If that new judge were not gay, would there not be reason for the new judge to excuse himself based on a potential bias toward heterosexuals? It kinda works both ways.
In the case heard about Prop 8, I believe it would have been difficult for a judge who was an old fashioned, Bible believing Christian to decide any differently than this judge did. The 'plaintiffs' made a good case. The proponents of Prop 8 just didn't do their homework. It would have been very difficult for some of the best legal minds in our nation to win that case.
These days, there are so many issues that strike a nerve with me. Many of these issues go to the heart of my beliefs as a Christian. I am finding that I cannot 'slay every dragon' that is out there. Arguing over a few issues, even though they are important in my heart, are becoming pointless. I'm having to pick other 'battles' to fight. The concern I have in this particular instance is more how it will affect the future. Can churches at some future time be sued for refusing to 'marry' gay couples based on Biblical teachings? It's possible, I would imagine. That, in my opinion, is much more important than the decision that was made by this judge.