South Korea is hostile for new families. Unless you were born to rich parents, have a decent education with a good job (that's with a Multi-national or a Chaebol), own property in Seoul, find a partner, and survive the probability of divorce, having a child is impossible--let alone having two to meet the population replacement rate. What's the solution?
If your apartment isn't a Prugio or Lotte Castle and live in Bangbae; If your car isn't a AMG, BMW M, or at least a Genesis; If your bag isn't a Hermes or a LV; If your morning routine doesn't include an Ah-Ah (Ice Americano); If your baby stroller isn't a Yoyo; If your watch isn't an Apple Watch or Omega; If your shoes aren't won through a Nike Raffle and have high resale; If your road bike riding through Hangang isn't a Pinarello; You'll be forever mediocre.
My solution? Spread the population apart such that people will stop comparing themselves with one another. There are plenty of places outside of Seoul where there's fiber internet, good schools that are empty (better teacher to student ratio), and cheap land. People should be more willing to embrace the countryside (shigol) and stop thinking it's bad or without opportunity. I hope there will be more remote jobs that pay well to incentivise new families to go outward. Seoul needs some rest!