I appreciate your opinion, Kris. You make a good argument here. However. since most monogamous breakup is as a result of cheating, 60% according to statistics, you can't be surprised people are choosing to open their marriages.

The only reason monogamy lasted this long is because women endure the pains of infidelity in silence while men cheated without conscience.

Read up:

https://www.forbes.com/advisor/legal/divorce/divorce-statistics/#:~:text=60%25%20of%20Divorced%20Couples%20Cited,a%20reason%20their%20union%20ended.