[MMM]

Single-payer health systems work best when no one is excluded. Nationalized health care is the norm in the first world. By choosing to live in Japan you are choosing to be a part of that system. It's too bad the loophole will be filled, but it sounds like that is what makes the most sense for Japan. Again, if you feel the want or need to supplement the national health care, then I am sure there are any number of insurance agencies which will happily oblige.