This premise is just wishful thinking. Work life balance may make us happier, it may be the best choice to lead a fulfilled life, but it's wrong to suggest it'

This premise is just wishful thinking. Work life balance may make us happier, it may be the best choice to lead a fulfilled life, but it's wrong to suggest it's going to make us win at software development. List the people you would rate as the top 10 computer scientists or engineers over the last century. Now, how many of these people worked only 40hrs a week or less? If you're not interested in greatness, or maxing out your true potential, then balance is a fine (maybe wiser) choice. But please don't discredit obsession and single mindedness after they have been the force behind so many accomplishments.