One point I'll agree with is that a lot of times, people use the argument that working 40 hours a week is actually the most efficient to mask their real argumen

One point I'll agree with is that a lot of times, people use the argument that working 40 hours a week is actually the most efficient to mask their real argument, which is socially unacceptable in today's business climate (particulary tech): People ought to have more to their lives than their jobs, and working 50, 60, or more hours a week makes that difficult. Personally, even if people had inexhaustible energy, I still would think it would be wrong to spend more than a third of your day at work. It so happens that it makes sense from an efficiency standpoint to, but I want people working under me to be able to have hobbies, families, and something other than their career.