If your entire waking hours have to be dedicated to working, what's the point of having a wage at all?
I already know that Japanese culture takes great pride in work. I wasn't being literal with the word "slavery" (that's why I added "borderline" next to it). That pride doesn't make the day magically last longer than 24 hours.
Being passionate with your work is great and all. But time is finite, and life passes by. If I'm left with no time to cultivate any hobbies or even spend quality time with my family and/or friends, then I don't see the point at all.