I know, but my point is that in terms of day to day life experience, a mother-only home is a mother-only home. It will be tougher for kids who started out with a father, and had one long enough to remember it (i.e. past age 3), and then lost the father to divorce, abandonment, or death, than for those who didn't start out with a father and thus don't have that sense of loss. Apart from that distinction, the quality of the child's life is likely to track the quality of the mother pretty directly.
Yep.