Originally it was a promise two people made in front of the whole tribe, including friends and family, to stay together to raise children. The intention of this was to put social pressure on the couple to stick to their promise and stay together even in tough times for the sake of the children. Before the welfare state, children born to single mothers or divorced parents would have become a burden to the whole community (which is likely why child sacrifice was common in many ancient cultures) and the tribe as such had a great incentive to hold the young couple to their promise. The arrival of the welfare state removed this incentive. If you want to have children, your best bet is to get married but to do thorough due diligence before you do. Although roughly half of first marriages end in divorce, that risk can be reduced substantially by looking out for red flags in a woman’s personality and history before getting married: - Has she been married before? If yes, she is best avoided.
Either her ex-husband initiated the divorce, indicating he wanted to get away from her so badly that he was willing to risk losing more than half his assets and possibly kids, or she did, in which case she has already proven how sacrosanct marriage is to her and how good her taste men is. - Does she have a lot of debt? Congratulations, half of it is now yours. The number one cause of arguments among married couples is about money. - Is she spendthrift? If she works as a waitress but has fifty pairs of shoes, imagine how responsible she’ll be with spending once she gets to tap into your income as well. - Does she have poor dietary or exercise habits? She’s got porker potential. - Does she have a bad or non-existent relationship with her father? If she grew up with a single mom, chances are she doesn’t trust men, doesn’t know how to appreciate men and generally has a negative view of them. It also epigenetically switches on her R reproductive strategy, making her more susceptible to extramarital affairs.