I'm not swayed an inch by the tradition argument. Many traditions have been lost because they were contrary to human rights, fell out of favor, or just didn't fit anymore. Of course my favorite is that if the women doesn't prduce a child we can try another woman. I miss the old days. Besides my wife has some beautiful sisters.
What are you talking about? Marriage continues to be, as it has been for over a thousand years, defined as a union of one man and one woman. There is no fertility testing involved.
In certain instances, justice requires a secular government to eradicate a tradition. For example, the burning of wives upon a man's death was the tradition in India before the British jettisoned it. Beyond those rare instances, government rule should take great care not to disturb the customs of a people. I am surprised you do not believe in this principle. It helps to retain our liberty. Otherwise, governmental authority becomes too powerful when it becomes the sole arbiter of social structures.
Many traditions have been lost because they were contrary to human rights, fell out of favor, or just didn't fit anymore.
Which of these applies to the traditional definition of marriage as a union of one man and one woman?
In the interests of discussion, can you name one that:
During the slave years, the southernors kept the slaves from becoming powerful enough to fight for their own rights in part by destroying their families.
Once the blacks could form good family institutions they rose quickly to the point where they could demand their civil rights.
The dimocrats didn't like that, so they created "The Great Society" to destroy black families again. Now look where the blacks are (except conservative ones).
Shalom.