Most Helpful Guy
You could put 90% of it down to this :
If that doesn't happen, men rarely lose interest interest in their wives. The trouble is that it will happen in 80% of marriages, and 52% of marriages end in divorce or separation because of it.
Most Helpful Girl
People were never especially good at marriage, now it's just economically/domestically feasible and socially unstigmatized. The fact that people don't physically NEED each other to survive is likely the primary reason it's unstigmatized, as the wealthy classes in history were the first to embrace divorce.