I find Japanese a difficult language though. Learning kanji is already difficult on the first place (on, kun and nanori readings), and different levels of politeness in the language make it even harder to learn. It depends on your mother's tongue actually, Asian people may find it easier to learn other Asian languages (while this statement is not necessarily true since some Asian languages are way too different from the others), while European people may find it easier to learn other European languages. And Japanese also has too many, I'd rather say way too many homophones, which are really confusing (in that sense Thai and Chinese too). Somehow Asian languages tend to have difficult writing systems, which make them not easily accessible to people who want to learn the languages.