nature and nurture both play a role
we see an increased likelihood in people growing up without both parental figures to be more likely to be criminals. we also see more psychopathic tendencies in people who live like this, and oddly enough. these are more common for males. which is theorized by the lack of systematic help for young males growing up like this. and it being not normalized to look after your own mental health as male.
that likely can drive one to lose their mind like that. though social studies and such have never been my strong point so idk