Something obvious about fatherhood
Speaking as a father, the main point made in a report in The Sydney Morning Herald's article ‘Dads find ways to work around long hours’, seems pretty obvious:
Richard Fletcher, of the University of Newcastle's Family Action Centre, said the five-year Engaging Fathers Project he ran showed that “if you think just fixing working hours will mean fathers will be involved in their children's lives, you are mistaken. Fathers first need to perceive their involvement as important to their children's development and wellbeing.”
You can work a 38-hour week and still not spend much time with your kids. Instead, perhaps you'll play a round of golf or two on the weekends or spend most of your free time doing house renovations. Indeed, you can work longer hours and do the same. It all comes down to what spare time you have and what your priorites are, doesn't it? If your kids are a high priority (higher than your golf swing), then there are few men who work such long hours that they aren't able to spend a good amount of time with their kids.
For more on why children should be such a high priority, see Tony Payne's brilliant book Fatherhood.