If you understand ant reproduction you'll understand why they work that way. Males are born from sterile eggs, they inherit genes only from their mother. Females inherit from both, just like all humans.

This means, female ants are closer related to their siblinfs than their children. They share 75% of genetic material with their siblings vs 50% with their children. The selfish gene and all that, there is a selective pressure in such an organism to become eusocial.

I can see calling it 3 genders, but it isn't quite right, there are still 2 sexes, and female workers are capable of reproduction. But in a eusocial species, the individual isn't the organism, the colony is. The individuals are like somatic cells, and the queen is the germ line.

Humans are not eusocial, just social. We show characteristics of eusocialty, but we aren't quite there. Above, you talked about the tribe and a reproductive aged girl spitting out kids until she was unable, and you're right, a tribe doesn't want to grow as much as possible, but it isn't as simple as that. People like to reproduce as much as is successful. Human children require care, we aren't alligators, so spitting out babies is not the most efficient approach, they all die. The most efficient approach is to spit out as many as you can rear with the resources available to you, and doing your best to maximize their survival. But the tribe, the tribe is something like an organism all it's own, I'm sure you're familiar with Dunbar's number, a tribe with too many people is unhealthy, as is a tribe with too few. So the tribe's goal is to reproduce, to splinter, to form a separate related tribe to cooperate with. And a tribe's behavior is a result of it's culture, it's culture is a result of which behaviors led the tribe to be healthiest, there's a natural selection there as well, its turtles all the way down. If a tribe is capable of managing resources maximally, it's members will reproduce maximally, and the tribe will grow and split, leaving 2 tribes with such successful culture and so on. Humans do attempt to reproduce successful adults as much as possible.

I think you're probably right, from an evolutionary and reproductive standpoint, about homosexuality and other deviations from the norm with regard to sexual behavior.i
 

 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. 

 actually now that i think of it the two ( or more than two ) are not mutually exclusive.

you can have monogamous marriage and a woman can be married to a beta or a homosexual and be impregnated by an alpha who is married to somebody else.

that is the monogamous marriage cell may be useful for raising children but the children may be somebody else's.

i think it was a Jew who said that the secret to happy life is to get married ... and cheat.  i was never able to find a flaw in that argument.

in other words all women are the same ( all women are bisexual but will submit to whoever is strongest, which happens to be men ) 

but men fall into at least 3 categories: Alphas, Betas and Homosexuals - in other words men who lay claim to ALL women, to just ONE woman and to NO women.

this strange urge MAGA Christians have to make everybody equal and interchangeable ( a man is a man and all men are the same ) is oddly communist for people seemingly obsessed with fighting communism.

reality is of course that Christianity is spiritual communism, whereas Communism is economic / statist Christianity.

and both Communism and Christianity ( as well as Capitalism and Atheism ) are controlled by the Jews. 

 Okay, are we still talking about the same things?