Worldwide, 10% to 40% of children grow up in households with no father at all. In the U.S., more than half of divorced fathers lose contact with their kids within a few years. By the end of 10 years, as many as two-thirds of them have drifted out of their children's lives. According to a 1994 study by the Children's Defense Fund, men are more likely to default on a child-support payment (49%) than a used-car payment (3%). Even fathers in intact families spend a lot less time focused on their kids than they think: in the U.S. fathers average less than an hour a day (up from 20 minutes a few decades ago), usually squeezed in after the workday.
This from Time Magazine, Photo by Barbara Peacock / Corbis