It’s a waste of time to sit around doing nothing at work. Better to just go home. Or to make whatever’s going on at work into an interesting problem, and then solve that. Or to work fewer days of the week. Or to modify the projects I’m doing at work so that I’m more interested in them.
The point is that sitting there feeling not motivated for hours is pretty much the least optimal solution of all, especially when we have such little time on this planet and there are so many things that I’m super excited about and could easily spend decades working on.