But having children educated and learning in Seoul...

Doesn't it definitely broaden their horizons and networks?
There is a huge difference compared to regional areas in terms of various educational infrastructures...
Living in a city of ten million people with all its various tangible and intangible infrastructures—even compared to living in a major metropolitan city with a population of 1 to 3 million—I think there must be a significant difference in the scope of what they see, hear, and the level of their perspective.