Japan famously has a killer smoking and drinking culture and absolutely awful gender dynamics. No doubt because all the men and women are slaving their lives away - no time for romance.

On a national scale, its actually not sustainable. You eventually run out of humans, or, more likely, your population pyramid gets super fucked and your economy implodes.

Japan's population pyramid has been getting progressively more fucked for decades - it's only a matter of time until their economy implodes. Assuming they don't reverse course.