This all comes down to the old saying 'the grass is always greener on the other side'. Those unhappy with their own lives always dream about being somewhere or someone else.
Most of the people on here who haven't even been to Japan previously but think it's some sort of mystical nirvana just haven't got a clue but hey it's still cool to dream.
I certainly wasn't that happy living in Australia (not enough snow) so now I live in Japan in one of the snowiest towns on the planet. It's definitely cool to dream and sometimes dreams do come true!