Until money is not a central measure of success motherhood will always be seen to lack value.
True yet the big elephant in the room is the cost of nannies. They do less than the job of a mother (only housework related to the children), but approximate what a mother would do (compared to a nursery). The nannies near me that I've met at baby group earn 35k plus per annum (plus pension etc now). In the debate about childcare and whether it's good for very little children to be in nurseries the fact that no rich people ever put their kids in nursery and always employ a nanny / nannies seems to always be conveniently ignored.
There are no special social systems targeting absent fathers as a social problem that I know of, no schemes which measure them as a ‘problem’ which requires state intervention to correct... If they leave they have left and are no longer tied socially to their children.
This is a major problem and reveals the sexist hypocrisy at the heart of government. If the benefit bill is such a big issue why not go after those absent parents (usually fathers) to reduce the benefit bill rather than penalising the parent that stays (usually mothers) in ways that actually harm children.