Removed from parents because the father smoked marijuana at night when the child was asleep, child murdered by foster care parent with a history of violations: http://fox43.com/2014/11/06/2-year-old-taken-away-from-paren...
Removed from parents for "drug use and homelessness", died from neglect in foster care: https://www.abqjournal.com/1113809/caregiver-arrested-in-dea...
Removed from parents because baby had a bruise from when he bumped his head while feeding, died in foster care: http://fox40.com/2017/08/17/after-baby-dies-in-foster-care-b...
For example Utah (where I foster) has 2.8 per 1,000 children in foster care, while neighboring Nevada has 6.7 per 1,000. New York has 5.0. California has 6.2. [1]
The ever-conservative Utah legislature puts a very high priority of children living with their legal parents. As long as there's no imminent health risk (abuse, hard drug use, severe neglect), parents virtually always keep custody.
I really wish it were like that in more places.
Traumatic situations for children should not be taken likely. But being forcibly removed into state custody is also a very traumatic event. You've got to be confident that the latter is the lesser evil.
[1] http://datacenter.kidscount.org/data/tables/6243-children-in...