I'm sorry that your wife is no longer with you, Speck.
I think the article is pointed more toward the average household where the woman generally still does the larger part of child care and the worrying aobut it and home care for elderly parents (even if working outside the home).
This is what I found to be true during the years when my daughter was young. Of all the couples with children about mytgirl's age that I knew, it was the woman, whether she worked outside the home or not (most did work at outside jobs as well as home), that did the much larger share of child rearing and taking care of the enormous amount of detail involved in that.
Michelle Obama said it best about her time as a mom working in business - when at work you worry about your kids, when at home you worry about your work, it's constant stress. I know Exactly what she means because I lived it. I'm sure there are men in that situation as well but not in my circle of acquaintances and friends. Maybe I should run with a better crowd.