Why live life like that? The only way to win is to not play!
I totally agree with the health problems it causes though.
I'm not sure either, but, at least as the story is told today, that was Ford's motivation for implementing the 8 hour workday at Ford. He allegedly surmised that if people were too busy working, they wouldn't have time to buy his products. It certainly seems plausible. If you spend all your time working, you really don't need to buy much other than the basic necessities, which doesn't help with a robust economy.
Well have we tried it?
That looks likely. But it will reduce the concentration of wealth (probably, dramatically), so expect some opposition.
Also, aren't we supposed to be accepting of all cultures? If that's the Japanese culture, why is it okay to disparage it?
Just look at Japan to see what a 12+ hour / day work culture looks like. Their population and their economy are both slowly going down the shitter thanks to it, depression is widespread, etc.