You make excellent points and make them well. I would add: Let's not take the arguments entirely at face value. People facing defeat in federal court have long tried to hide behind states' rights (used for segregation and abortion, for example) and that any court decision that overturns legislation is democratically illigitmate.
> "regardless of what we think of marriage equality, who are we to override the decisions of the people?"
The courts were created, intentionally, as a check on the legislature and executive. Also, the will of the people as expressed in the Constitution, that all citizens are due equal protection and due process, is as democratically legitimate (and overrides) their will as expressed through the legislatures.
At the same time, as you say, there are legitimate concerns about the limits of judicial power, and they should be examined and advocated for, even if the advocacy is, as usual, for political convenience and not for principle or public good.
> "regardless of what we think of marriage equality, who are we to override the decisions of the people?"
The courts were created, intentionally, as a check on the legislature and executive. Also, the will of the people as expressed in the Constitution, that all citizens are due equal protection and due process, is as democratically legitimate (and overrides) their will as expressed through the legislatures.
At the same time, as you say, there are legitimate concerns about the limits of judicial power, and they should be examined and advocated for, even if the advocacy is, as usual, for political convenience and not for principle or public good.