That is again, the homos problem. People must face the consequences of their decisions, but it sexuality or otherwise.
I've given several, and you have a very short memory, for example just 1 page back
"Ultimately you have to recognize the reason as to why the government accords marriage status and its associate economic benefits upon people. Its not becuase they pay tax or were born into Aus. society, people do that whether they are married or not, but rather it is the governments reward to poeple who have children and thus make one of the greatest social and economic contributions a citizen(s) could possibly make to the state. Gays, as a unit, cannot reproduce, and thus already void their right to any form of government recognized union (before we even start on any moral obligations we may/may not have) - why they seek this so desperately is a question in itself, when one can be in a union whether the government recognizes it or not."
Given the current laws and everything, I also doubt my side is the one that has to do the proving