Mom and Dad are both responsible, but we need not expect them to share the same roles in parenting. Men and women are different; moms and dads are different. Women are even blessed to have a reflection of their nurturing gifts built into their bodies. They grow their children inside their bodies, and feed them with their bodies, giving of themselves. It's a beautiful thing. Men are typically stronger and more aggressive, less "nurturing" but more protective and geared toward leadership. Women don't like wimps or sissies, and men don't like barking, independent broads. There is a complementarity between the sexes and between mothers and fathers. We don't have to pretend we're equal. We're different, and that's okay. We can be different but equal in worth and dignity. Though I have to say women are pretty special. Y'all are awesome.