Monogamy, when agreed upon by two people who both only have the emotional energy and capacity for one partner, is more than okay and admirable.
But #monogamy as a default state — and for that matter, as an institution — is inherently tied to a mutual expectation of partial "ownership" of the other party. Expression and exploration of one's sexuality outside of this one other partner is seen as a bad thing by default, completely undeserving of discussion.
On top of that, such a system has its roots in a husband literally owning his wife in multiple ways, and echoes of this are still visible to this day. Many of the "stricter" religions still involve anything from a father "giving his daughter away" to literally selling her for a dowry, with love being entirely out of the equation.
Monogamy as a personal choice is fine. Monogamy as a default state, however, is inherently toxic in my opinion. A cultural shift to wider acceptance of freer and more traditionally "queer" forms of love would be a massive net positive for society. :ms_polyamory_flag: