And so you want to come to Japan? Have you looked at economic news over the last 18 years? The economy is still stagnant, and has been for over a decade, following a long deflationary period. At least the US economy is now showing some growth.
The Japanese haven't shot themselves in the *** like the US did with the Patriot Act, NDRA and NDAA, that is true. But as a foreigner in Japan, you really don't have a better situation. The police have the right to ask for your ID at any time without probable cause, and can hold you for72 hours w/o access to a lawyer, with the option of renewing such detention up to 2 weeks.
If you want to come to Japan "for" something, please do. But make sure your glasses aren't rosy.