Can't deny that there are some industries where more hours are better and that beyond the 4-5 hour range they don't suffer from diminishing returns. But I'd point to David Graeber here and just say that there seem to be a lot of people out there making themselves look busy for much of the day, and in the process wasting a lot of their lives and needlessly taxing their own emotional states. And together we've tacitly made a decision that this is all OK and normal.
Yup, it's certainly a punchline in seemingly every office job I've ever worked. I've worked a lot of retail and cooking jobs though too, and I think a lot of people come from these fields as well and have trouble distinguishing intellectual work from physical, utilitarian work.
