The judiciary does exist, in part, to right legislative wrongs. That is part of the constitutional checks and balances. When they go over the line is when they make policy instead of interpreting the law and telling the legislative branch that a law is simply not permitted under our Constitution. Some judges understand this, and some are activists. Don't throw out the baby with the bathwater here.
Righting legislative wrongs is a natural consequent of judicial review, it's not its primary function. Ideally, the court will only intervene when it's a matter of life, liberty (as in your literal freedom, not entitlement), and/or property at stake. For example, the plaintiffs in Loving v. Virginia were imprisoned and fined and facing banishment from the state of Virginia for marrying outside their race. That would be a constitutional matter. Gay marriage isn't since states simply outline what is their legal definition of marriage. They're not throwing gay couples in jail for having a legal marriage elsewhere, nor are they fining them or confiscating their property because the people don't include same-sex couples in their understanding of marriage. It's simply not of the law. So for courts to more or less declare it law oversteps their role.
As far as same sex marriage goes, if to government steps on and issues licenses to regulate and guarantee certain legal rights to people in the guise of marriage, that right should be available to everyone. This will not stop the government from stepping in and taking away your rights when it has a mind to, but it will make it harder, and that alone is a good argument for allowing same sex marriage.
By the way, I should have responded to you first, but but Jones pissed me off when I read his post.
My apologies.
It
is available to everyone. The problem is, it isn't available in more than one way to everyone. Because someone wants to marry a member of the same sex doesn't mean they don't still have the right to marry someone of the opposite sex and have access to those benefits if they wanted to. It's not all or nothing. A man who wants three wives isn't being denied rights just because the law wont recognize three marriages.
You can say maybe our definition of marriage isn't inclusive or progressive enough. That's subject to debate. But it doesn't
have to be more than what it already is.