@Red_Hat @Hoss Low wages, long hours, open racial discrimination against non-Japanese.
Unless you have very specialized skills and experience, it's easy to get trapped in an English teaching bubble for decades and wake up one day at age 50 still earning the equivalent of minimum wage.
It's undeniable that the food is excellent and the women are beautiful, however. For many, the tradeoff to enjoy that full time rather than just on vacation is worth it.