On average, child-care is so heavily tilted toward women that for many, doing a bit less would be good for their health. Also, it's not zero-sum -- parents can

On average, child-care is so heavily tilted toward women that for many, doing a bit less would be good for their health. Also, it's not zero-sum -- parents can both be involved at the same time -- but I also enjoy the times when my wife is not around and my kids give me all the attention.