Would you want to work in a country that is known to have such a shitty work life balance that people aren't having children because of it?

Idk about Korea but here it's mostly because you can't afford to. I could barely support myself and someone else (most of that cost would be rent which wouldnt even change, either) before bringing children (whole bunch of new costs) into the mix.

I work a skilled job with half a decade of experience, and am in the correct salary range for the area, as well.