Later I came to Japan to study Computer Go in grad school. I planned to to stay for 2~3 years. It's been 7 years now. I don't play go anymore, but I do harder stuff (karaoke, clubbing, etc). It's been a sort of gateway drug for me.
PS: by the way, the reason an American 2-dan can slaughter a Japanese 2-dan is simply because the scales are different, mainly due to inflation in Japanese ranks. If you're AGA 2-dan (or say, European 1-dan) you should really upgrade yourself to 4-dan when coming to Japan.
Did you join one of the go cram schools?