Polygamy is a luxury of the cave-people, and monogamy is an existential responsibility of the civilized society.

Promoting promiscuity in this evolved and civilized society is actually like signing the Declaration, that says:
“I hereby renounce my membership of humankind, since I am neither human nor kind. I declare that I no longer belong to the modern human species, i.e. the Homo sapiens. From now on I shall be counted among the swingers of the animal kingdom, such as the bonobo or montane vole. I am simply an arrogant philandering savage.

Polygamy is about sex, whereas monogamy is about love.

Either one is promiscuous or in a relationship - it cannot be both at the same time.

Monogamy is not a choice, it is a responsibility of a genuine human.

Marriage is not a competition. Marriage is completion of two souls.