Look at The Iliad, there's all this stuff about men loving children. The King of Sparta was the most brutal warrior of ancient Greece, and the only thing he liked to do was horse around with kids when he was back from slaughtering. One thing that feminism revealed is that being a distant patriarchal figure was not something men wanted to be. They want to be more involved in the lives of their children, and you can see that once they're allowed to have that connection, they crave it.