In a local newspaper (it charges for web use, so I won't name it) mention was made of the new NSW Premier Mike Baird's 'conservative Christian' beliefs and that these were connected with his rejection of so-called 'gay' marriage (I must say, we all felt pretty gay at my wedding...I resent a good word being stolen in a transparent attempt to legitimise sexual perversion) and single sex adoption (i.e. two blokes, etc.)
It was set as though his rejection of these touted twists to society were part of some strange 'add-on' to his thought world called 'beliefs', in contrast to those who supported such notions from somewhere else in their psyche: based on 'rights', I suppose, or 'choice' etc.
But all we have, is beliefs. Some people's are grounded in the revelation of our creator, others are secured by little more that the almost solipsistic triumphalism of the self; but this too is a belief; and, dare I point out, a 'religious' belief. That is, it makes reference to something taken as basic in reality. For modern individualistic westerners nothing is more basic than 'what I think and for no particular reason', however it is dressed up ('rights', 'choice', etc, as though these movements of the will hang somewhere in the air).
Thus, it is a contest of beliefs, not only about God or our contingent existence, but the way society works over time, the way the young are nurtured (and produced: same-sexism is, of course parasitic on proper sexual conduct that produces offspring) and the structure of marriage to provide an orderly method for providing for the welfare of mothers and children.
In these terms it is obvious that marriage of male to male is not marriage, or a play at marriage to pretend legitimacy of conduct, much like single sex adoption is a weird play at families that are impossible to produce through the conduct represented, showing it up for the sham it is.
Society has historically resisted such practices because they contain the destruction of society: in a single generation if ubiquitous, but still, it constitutes a 'death-style' to quote an American politician, in hollow parody of a 'life-style'.