For me this was good news, at a time where there isn't a lot of it. It is what I think will someday be seen by all as the right thing. I had waited today wondering which way it would go. It had been encouraging to me that Ted Olson, a conservative had been part of the legal team working to overturn the ban. He did so based on what he felt was Constitutional. It is a conservative viewpoint to stay out of other people's choices as long as they don't hurt others.
Obviously it, like the recent court decision on Arizona's immigration law, is not over. It will be decided by the Supreme Court eventually (and who knows how they'll see it given they are all from a religious background, most Catholic), but it's a good start.
To deny one group a right to have a normal family life simply because they fall in love and sexually want to mate with someone of their own sex is very discriminatory and not good for the country. The fear that it will damage heterosexual marriages is foolishness. The fear, that somehow God will reach down and smite our nation if we don't make it impossible for one group of humans to live normal lives, is superstitious fear mongering.
My bet is someday humans will wonder how anybody could see it as anything but logical that marriage is open to all consenting adults. Will it someday lead to legalizing of polygamy? Who knows but they are about two different questions.