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Just as some related examples to illustrate that there's a whole lot of children not growing up in some idealized life though:
~23% of children in the US live with one parent and no other adults in the household.
~40% of children born to married parents in the US will see those parents divorce before they turn 18.
~40% of children are born to unmarried parents. I don't know where to find what the rate for those parents splitting up is, but I'll assume it's probably not better than the married ones.
1/7 children experienced abuse or neglect in the past year, 1/4 will at some point in their childhood.
Also bear in mind some states consider neglect something like "allowed 8 year old to play at park by himself 2 blocks from the house and within line of sight from a trusted neighbor's house" or "left child in locked climate controlled running car while walking inside to pay gasoline because card reader was broken and didn't want to expose child to crackheads/drunks lingering next to the register (if you use inner-city gas stations you know what I mean)."