Fair enough, but compare that to how many hellholes produce people who go on to create hellholes. I look at myself, I have no addictions, I work for myself, I have no criminal history etc. I'm a productive member of society by most standards.
99.9% of my family however are welfare leeches, drug addicts, criminals, domestic abusers, jobless etc. Sometimes making it out of a shitty situation is mathematically a miracle.
Also, if how you're raised by a family doesn't heavily impact your values, we wouldn't need to set parental standards, worry about broken families and the destruction of the family unit, there wouldn't be a measurable link between criminality and fatherlessness in the home and so on.