[SatoriOne]

If you speak a European language natively chances are Japanese is very difficult to learn. THe problem is not the kanji or the pronunciation but rather the organization of thoughts it takes to produce natural sounding Japanese. It is very different from most languages and requires a large amount of practice to become familiar with, but even then it is hard to produce in varied contexts.

I guess with practice and determination almost anyone can become conversational with Japanese. It will take time. Mastering Japanese is another story. That could be beyond what most people are willing or capable of doing.