It's a good day- seeing as it is an individual state law and not federal, and my state isn't included in the participating states, I don't pay a a single dime toward it. Taxes are an entirely different issue. There are lots of things I don't like having to contribute toward but this is the US. Majority rules.
You could technically argue this for a lot of things if that's how you perceive human rights. Human rights are about equality and freedom but do not protect you in doing whatever you want with your body. Even if it is a "victimless crime"(prostitution,drug use, etc..) you can still be prosecuted. And it isn't "the state" that is pursuing you. The state is not the Petitioner in this action. It is a civil lawsuit. There is much debate about this bc some people believe you should only be able to prosecute for theft of tangible items (money,cars..) but when you have children and the father/husband is being stolen some believe that should be less enforceable. In regards to the lawsuit itself, you have to prove the third party knew the spouse was married, therefore intentionally meddled in a union (essentially a contract) between to parties. I suppose your belief in this lawsuit comes down to your perception of marriage and adultery.