I guess it is more important to have one of each gender if you live in a society that segregates duties, rights and responsibilities down sharp gender lines. I suspect that is the case in kanicbird’s ideal society. It wasn’t too different from how I was raised. My brothers were definitely treated differently and had different expectations than I and my sisters. Screwed us all up in our various ways. My dad’s parenting skills consisted of making men of my brothers an largely having nothing to do with the girls. I got to take care of babies and cook and clean. Education was not stressed, because the best I could hope for was to find a man to take care of me. If my father thought he could have arranged a marriage for me, he would have done it.
This was all in the '60’s and '70’s California, BTW, which probably had a lot to do with why the gender lines didn’t really stick too well for my older sister and I.