Women often go for the guy that shows interest in their interests. Female sexuality is as unrestrained as male sexuality in most western countries. You can't restrain one without restraining the other somewhat too.
You do know that there are black women and Muslim women, right?
If unrestrained, women will literally go to the male that shows interest in her interests. Unrestrained female sexuality means contraceptives, silly-nilly, otherwise you are restrained by the risk of unwanted pregnancies.
Enlighten us, dearie, what is the status scale of all these tribes you speak of? Is Swedish tribe higher than Estonian tribe? What about Norwegian tribe?
You don't know many women in real life, do you, Ramie? Superior genetic material isn't what's on most women's minds when they chose a partner. Intelligence, a sense of humor, an interest in equality; those are usually much higher up on the list when women choose a partner. We want to LIVE with that partner, stupid, not just spawn an offspring and then go our separate ways.
You sound like you're talking about animal husbandry, not a human society. Women have just as much in-group loyalty, because the men that are killed are their fathers, husbands, brothers, sons, and the women (SHOCK, HORROR!) want them alive, rather than watch them be murdered and then be dragged away and raped by strangers, you DOLT!