Yes. It shouldn't even be a question. It shouldn't be a question the way blacks not needing separate facilities is no longer a question, or women being able to vote is no longer a question. The reason it's still a question is because gays are currently the most ostracized group. It's gotten better but the main reason they remain the most ostracized group is because many people still think it's a lifestyle choice - being black or a woman is obviously not a choice so that's easier to accept.
And of course there's the hypocrisy or religion. I just hope people who used the Bible against gay marriage never had pre-marital sex or the Hell is waiting for them and they'll burn right next to a gay person