You are measuring economic worth solely as the ability to lift heavy things.
No, I'm not.
Surely a woman who crafts fine silks and raises healthy children is just as valuable as a man who carries bricks and should have just as much say in the social and political future of her culture.
Do women have an innate ability to craft fine silk better than men? Could men learn to craft fine silk that rivals the fine silk of any women? (Most would say yes- there's no inherent advantage women have in silk-making that I'm aware of.) Could men, in general, raise healthy children as well as women? (Opinions would probably be mixed.)
The argument is not that economic worth is based on lifting heavy things. The argument is this:
-Men are stronger and faster, in general. Measurably biologically superior in those two things. This provides a noticeable edge in combat, hunting, construction, etc.
-Men and women are intellectually equal, though they do have some psychological differences, in general.
-Depending on what sort of economy a culture has, ranging from hunter-gatherers to urban people, the goods and services they need will be partly physical and partly mental, though the emphasis could slide towards either end of that spectrum depending on the time period and level of development.
So it seems that, in many cultures, men were in a position where they excelled at the physical stuff, but had no inherent disadvantage at the mental stuff. So it's not that women couldn't do things; it's that men had a definitive biological edge in many measurable things, but women couldn't really say the same.
An example would be a documentary I watched on the Amish groups. During a barn-raising, the men do a ton of physical work to build a large structure, and the women cook a lot of food to provide them with food. Now if the roles were switched, and women built the barn and men made the food, would it work as efficiently? Not really. Men have no inherent disadvantage at cooking, so with the same level of training, they'd provide food just as well as the women. But women do have a biological disadvantage in strength, so it would likely take more women the same amount of time to build the barn, or the same amount of women more time to build the barn, then men. So in their two roles, if men and women are equal in one category, but men are superior in another category, then it's unsurprising in that culture that men are looked at as superior.
Many of the things that women are better at are non-measurable. They could potentially be better at raising kids, instinctively. They could be more effective communicators. They could be better at avoiding confrontation and war. Hard to prove and measure, though.
So it seems that, in history, men have often had an edge in things that are obvious and measurable, whereas any edge women tend to have is usually in a more subtle, less measurable area. So I don't find it surprising at all that in culture after culture, continent to continent, there were a lot of patriarchal societies.
As I said, I doubt that matriarchal societies existed in the sense that patriarchal societies do. That is, with one gender dominating the other. The Amazons and Drow are myths.
You wont find a female equivalent of the Taliban.
Militarism for one thing. The most aggressive military states have been patriarchies and they also tend to be very "evangelical" about their cultures.
But I doubt that there is a single cause.
wa:do
And that would be an example of where women have a subtle edge probably. Women are apparently less likely to form female equivalents of the Taliban, and probably would go to war less in general. Hard to prove and hard to measure.