To that end, you're getting dangerously close to talking about systemic issues that are causing specific demographics to have a more difficult time achieving an ideal child raising environment. When the parents have less and less breathing room to survive because their job(s) is (are) squeezing them, the children feel that too.
When I was a kid, my dad getting WorldComm'd still stands out in my memory as a significantly stressful and traumatic period for my family. Nowadays it's not scandal and fraud driving the pain, but layoffs and arbitrary growth targets bringing the pain and stealing the stability that many of us enjoyed as children.
If we want happier children, it would probably go a long long way to reduce the uncertainty and churn that's endemic to being a modern wage earner. More than a couple days leadtime on schedule changes, actual benefits provided and not held just a few hours a week out of reach, less 1099 contract work with easy to fuck up taxes, etc etc etc. It just is much less friendly to be a wage earner now than it was when our parents were raising us.