For the ultimate in clean living, look to Japan as your expat destination. A culinary focus on fresh foods, combined with world-class public healthcare, gives this nation the highest life expectancy worldwide. A robust public transport network nearly eliminates the need for personal vehicles. Cherry blossom season draws millions to lush landscapes, while Tokyo's neon-soaked skyline beckons digital nomads seeking the latest cultural trends. A constant demand for English teachers translates to ample opportunity for gaijin (foreigners).

However, this outsider status never fully goes away in Japan's insular culture, though it's easier for younger folks to fit in. Heavy emphasis on work and productivity can impact time with family, as well. and English usage drops off outside the major cities. Ultimately, if immersion in a society rich in history and culinary delights is your plan, and you love a challenge, then consider Japan for your new home.