I'm currently in Shikoku and there is no way that I would want to put my daughter through the traditional Japanese education system for the whole time.

Two big things

1) English - Japanese English education sucks...period - yes I know about International schools but can't afford it on my salary.
2) Critical thinking - The UK school system teaches you how to think and be critical - take for example history Japan does has a set textbook and that's how it goes they don't try to teach that there might be conflicting viewpoints.

What my elders always told me - it's better to know how to think than it is to be a walking textbook. Japan's education system is still too slanted towards creating walking textbooks and that's one of it's big downfalls.

Work issue not withstanding - I work remotely for a UK company and it's so laid back it's untrue the working. I work at a desk in my apartment and I have a 2 second commute. Like heck would I want to commit to mandatory overtime and such - yes I'll do the odd freelance job for companies I know but no way would I become a seishain.

The final thing for me is the pension system - I posted a thread about it before people doubt it but I'm sure sooner or later there's gonna be a big fall out when the goverment will have to seriously reduce payouts or SOMETHING but right now I am doing everything I can to reduce what I pay in to the Kokumin Nenkin - at least the UK I know the population graph is stable and I will be able to draw a pension when I get to that age.