As an Australian, I completely expected a "yes" majority.
While I personally think marriage is between a man and woman, I voted 'yes' simply because Jesus wanted equality from the outset. Call me an infidel all you want, but fairness, kindness and 'a fair go' are key tenets of Jesus, and for good reason. I'm not for persecuting others because our religion disagrees with their lifestyle. That belongs in places like Uganda and Saudi Arabia, not a Western developed democracy like Australia.
In the Marriage Act 1961, the definition of marriage is simply "a union between a man and woman to the exclusion of all others voluntarily entered into for life". It does not refer to religion, and is a simple secular definition, apart from the "man and woman" section that was dumped in by John Howard for political purposes.
Despite this, I fully support Senator Paterson's bill that allows priests and private enterprise to not allow service to gay people on religious grounds, because those people should not be forced to serve gay people with a gun to their head, as it conflicts with their religious beliefs. Religious freedoms need to be protected.
At the end of the day, the people have spoken, and Australia is not a theocracy, give section 116 of our constitution a good read and you'll see why.
"The Commonwealth shall not make any law for establishing any religion, or for imposing any religious observance, or for prohibiting the free exercise of any religion, and no religious test shall be required as a qualification for any office or public trust under the Commonwealth."