Free access to scriptures religious leaders try to censor
Why marriage tend to be monogamous?
Well, there are about the same number of males to females.
That seems like a pairing.
However, males want as many females as possible. Women prefer the best genes measurable by wealth.
Some restaurants, for example, are full. Some restaurants are empty.
There is no restriction that all restaurants deserve the same number of customers?
So why monogamy becomes the norm?
Look at the Arab. The oil money goes to the Arab king. Why? Because the Arab king is in power.
It seems that natural resources tend to get divided proportional to military power.
Say you productively create wealth, and then some robbers put gun in your head. Guess who will enjoy your wealth?