So you support the right of states to ban interracial marriage? OK Got it.
But the court did did not write a law that says that there is a right to interracuial marriage, just like tey did not write a law saying that there is a right to same sex marriage. If you think that they did show it to me.
In both cases they simply invalidated state laws that prohibited those practices based on Consititutional law, specifically the right to equal protection under the law and due process. That is what they do
You say that "A more credible argument would be: the government doesn't have the power to say who can and can't get married." sp then you also think that child brides and fathers marrying their daughters shoould not be prohibited by law? The fact is that the courts can prohibit certain thing if the government cannot prove a compelling government intgerest, or in some cases a rational basis for doing so. That is why laws against interracial marriage and sanme sex marriage were thrown out.