In the opposite direction, even this is not easily achievable today. Lots of single parent households. The US has the highest rate. It seems difficult to maintain relationships when the primary one that's supposed to be the longest lasting (outside of blood relatives) is failing at such a high rate.
Society has mutually agreed that if two people don't want to put in the work, they can split. Society has yet to really get to the next step of "living with kids is hard work, so you can just abandon the kids".
This is not to say that real reasons for divorce don't exist, but there are those who use it as the "easy way out". It's interesting that everyone's ex is the absolute devil, even if they happen to be currently married to someone else's ex.
Society has decided that kids are a fashion accessory and the primary driver of population growth will be immigration - it's cheaper too no need to things like schools.