I really think it comes down to age. Late teens through early 30s is a really nice time to be in big cities like Seoul.

Now I feel differently and prefer my quieter place in the outer suburbs. I could imagine children between the ages of 5 to 15 or so would absolutely love it. I have a friend who just moved from here to Canada with his family (none of them are Canadian) and they absolutely love it there. Mostly it's the clean air and space. 2 things Korea won't solve any time soon.