It always bums me out to see political effort being expended to deny equal protection under the law to certain individuals. Nowhere is this more apparent in the gay marriage debate. There are legal protections awarded stable heterosexual couples that aren't awarded stable homosexual couples.
This sort of denial of rights agenda can range from the mean - denying gay partners hospital visitation rights - to the downright self destuctive - booting arabic speaking soldiers out of the military because they're gay. And there's a longer term destructive impact here as well - there's a reason that the State promotes and subsidizes marriage. Stable, long term relationships are good for society as a whole. These folks tend to buy homes, be active in their communities, and take ownership for their neighborhoods more than single people.
If you accept that some people are gay (and how can you not?), it is unethical to try and deny equal protection under the law to gay couples. If you are expending political capital to try and deny rights from tax paying Americans, you will be on the wrong side of history. I promise you.
I'm glad the California Supreme Court got this right.