Rosh Hashana is essentially about leaving your wife and going to Uman

HH

Rosh Hashana is the day that Adam was created, and when HY put him to sleep and separated from him what He created as Eve. The entire Kabala is replete with this theme called "nesseera" the removal and separation of Eve from Adam. From Rosh Hashana on we are busy completing the countenance of the Shechina (the aspect of Eve) and finally reuniting her with her husband (Ze'ehr Anpin- the Small Countenance/Adam). That is why it is very simple to understand why the essential idea of Rosh Hashana is to separate from one's wife, and go to Uman (the Creator).

Hence it is very understandable why all the ignorant aimless people endlessly bicker over how people leave their wives to go to Uman for Rosh Hashana - because that is precisely what is necessary and called for, so that is where they will put down opposition...

Na Nach Nachma Nachman MeUman!

Polygamy

HH

In the last 20 pages of Outpouring of the Soul - which is a synopsis of Likutay Halachos on Rosh Chodesh, Rabbi Nussun explains different verses of the Prophets which predict how several women will accost one man asking him to marry them. Rabbi Nussun sees this as power to the women; that the women are proposing to the man, and that multiple women can mate with one man. Very interesting take on the issue, which I'll leave you to contemplate...

Na Nach Nachma Nachman MeUman!