[Mrs. Don-o]

The behaviors we've been speaking of (in my posts anyhow) are the gender-imbalancing behaviors polygamy and female infanticide.

In neither case is "adult consent" the only or the most important consideration.

Female infanticide, prenatal or postnatal,is murder.

Polygamy, though it has a negative impact on culture, is probably not going to be eradicated by its being illegal, but it should remain illegal. There's no reason for society to give an official stamp of approval to a practice with such disruptive effects on behavior and basic societal functioning.

I am not a libertarian, but from a libertarian point of view, there's arguably no reason for the state to be in the marriage-defining business at all. Marriage is an institution which far predates the state, and (up until 15 minutes ago) has always been in the conjugal form, i.e. man/woman, whether polygamous or monogamous. Any "redefinition" of marriage is outside of the competence of the state.

[2ndDivisionVet]

Yes, but the state has redefined it already, and not just here.