The reason for marriage is sex, and the reason for sex is children.
So men need to bring wealth and personal virtue to the table, and women need to be and stay personally virtuous, and to want to have and raise children.
Today these are surprisingly radical ideas.
Smart people think that sex should only be after marriage, and not outside of wedding vows; and likewise, they want a partner who feels the same. This makes sense, because there is not an unlimited amount of energy for procreation, and it can be depleted in sex for pleasure, along with other problems.
But, for either men or women, having lots of sex partners somewhat ruins their chance for marriage. What a radical idea.
Oh bull on the sex for pleasure part
The rest yes
Sex is for intimacy actually and reproduction
Intimacy transcends pleasure
God knew we needed that