I love living and working in Japan, but I wouldn't recommend moving here unless you're committed to becoming fluent in Japanese and integrating into the culture. This is probably mostly true for any country one could move, but Japanese is one, if not the hardest language to learn for native English speakers. I do, however, recommend everyone visit! Japan is a beautiful country with a unique culture and has something…
Their Kanji script/written alphabet is a travesty left over from cave paintings and Chinese. But the spoken language is easy, easy to learn. The variations with polite (public or hierarchical relationships) vs common speaking, seem to mainly affect verb conjugations.
But their sentence structures are reversed from ours, but many languages seem to be, but they have fewer words, and make a number of a assumptions about context that make speaking actually less complicated, but require more understanding.
Also, they don't have any exceptions in pronunciation like English, which is huge. The extra effort saved on this alone can balance out the other complications.
This is my limited experience with a few years training in the language, family members learning it and a few relatives that lived there for years. (one permanently now)
Feel free to correct any errors I've thrown out.
My point is that Japanese can be easier to learn than other languages, but for reasons that may not be obvious.