That's a great idea -- if you don't have a wide range of hobbies and a curiosity about life. So work 40-50 hours a week, and then in your leisure time continue

That's a great idea -- if you don't have a wide range of hobbies and a curiosity about life. So work 40-50 hours a week, and then in your leisure time continue to work on the same type of item? Maybe many developers who relate to this don't have creative pursuits (eg. writing, photography, painting, etc.), don't exercise, don't have much of a social life, and thus it is a no-brainer. Or, perhaps people are replacing wasted time (i.e. TV) with side dev time. Either way, more power to you. I'm a believer in cross-training - creative thinking and a healthy body also improve the 'actual work' part of your work life.