you're trying to succumb to the exact low IQ pitfall i have outlined

namely you are trying to bin species as either eusocial or not in a binary fashion

instead of binary Yes/No - think in terms of continuums / spectrums

and instead of one dimension think infinite dimensions ( this doesn't apply to our subject at hand, bit is needed to understand the absurdity of describing political positions as left wing or right wing ) 

at the very least don't try to impose limitations of your cognitive capacity ( everyone's cognitive capacity is finite, it is not a knock or personal attack ) on infinite time/space or whatever the fuck it is we live in 

i will concede that humans seem to have a mode where one man mates one woman for life called marriage and this is supported by the fact that equal number of men and women are born ... if such a mode of reproduction didn't exist it would be hard to justify having equal number of men and women as one man can breed many women, so there is SOME basis for monogamy in our biology ...

and yet what if there are also alternative modes ( other than monogamy ) used in times of overpopulation / scarce resources or in times of war or in any kind of special circumstances ?

what if Christian concept of marriage is a procrustean bed ?

in fact monogamy is crippling to evolution.  evolution is most effective when alphas breed many women and betas get cucked because that is what favors the seed of stronger men whereas monogamy doesn't.  a monogamous society will evolve weak men who will ultimately be conquered by stronger men that have evolved through alphas dominating betas.

Christianity is a religion of stupidity and weakness.  Nietzsche explained this and he was right.