Both.

Positive upbringings helped those folks navigate everything in life better from simple chores like laundry, to relationships, to school, to careers... etc.

People are more healthy when they're in an environment that promotes emotional/educational growth vs. when they're forced into a survival mentality. Those who had the opportunity to grow in safety have an easier time socially vs. those who had to navigate turbulent childhoods.

Much of it is just trust