Is moving to Japan worth it for career/life-balance? I know its a vague question but from the things I've read/seen, Japan seems like an amazing place to be.

Japan is very clean and nature is considered quite sacred. There is greater cultural harmony overall, making it feel very safe and relaxed. In the cities, there is a lot of isolation despite the number of people, but in more rural areas there is a more relaxed attitude. While English is taught there from a young age, it may be difficult feeling truly integrated into the fabric of the culture without learning the language. It depends on what sort of work you do for "work/life balance" since Japanese salarymen are sort-of expected to work long hours. If you work for a Japanese company or a European or US company in Japan, the differences in expectation will be notable.