> No, I'm not. The due diligence I am talking about concerns
> how multi-partner marriage could cause problems because
> our society has so entirely adapted its laws,
> institutions, and customs to marriage between two
> people. It could also cause problems because sexism is
> still a reality in society at large.
IOW, my objection to your argument is that it would draw the
line against group marriages for all time. You object to
group marriage as incompatible with a huge number of things
in current society that ARE NEVER GOING TO CHANGE until
group marriage is introduced.