"If anything we, with just one wife, are the exception, not the rule, to the point where it appears not just unusual but downright perverted and sick."
You see two person heterosexual marriage is now in the minority, they're now viewed as "downright perverted and sick."
Replacing it is any pair, or grouping of people that feels like shacking up together. "Gays" are attempting to have their deviant sexual forays and "relations" supported and encouraged by the state and given the name "marriage" in American culture.
And they may succeed as confused as people are today.
In todays America, things and ideas that were once thought of as "evil," "dangerous," "criminal," or "sinful" have been gift wrapped, perfumed and renamed, now they're "rights."
These things and ideas are now veiwed as normal and accepted behaviour when they're anything but.
Just because bad behaviours and ideas slowly become accepted by large populations of people, doesn't magically make them GOOD ideas.
That you would like to change the discussion subject to human relations in biblical times is clear. That seems to be a topic for a different thread.