There’s an evolutionary underpinning driving a statistical difference in rearing behavior of males and females. You’d expect mothers to always commit more resources to their children because (1) eggs are expensive and spermm is cheap and the number or progeny is limited (2) high cuckolding rates also imply that men will hedge by spending less resources on their family. (3) Males may take a different strategy that contributes to the family which involve risk taking and high mortality rates (there’s no free lunch).