If you're like most of my colleagues, friends and clients, you work well beyond forty hours every week and plan to work until you're sixty-five or older.  Shouldn't you and your colleagues enjoy your work?  Do you want to work in an environment where people are engaged, continuing to learn and producing excellent work for great clients or do you want to work in an environment where people are discouraged, no longer enjoy their work or their clients and perhaps actively undermine each other?  Presumably we'd all prefer the former.