It's more than just that though. There are all the suffixes (or the significance with a lack of one), various genders and levels of saying "I", and the 15 different ways of bowing to show anything from respect, the standard, 30° bow, to your own deepest shame, the dogeza. [Though bowing is not part of the language, it goes way beyond most Western apologies.] Their entire language and culture are backed by tradition.

Japanese syllables are phonetic, and most (if not all) the vowels are short. the "you bastard" is 'Teme.'

I kind of wish English had the same level of complexity that Japanese does. It makes it a lot easier to convey expression in written form or over the internet. We have to rely on emphasis because all our expressions are set by tone and inflection. It's almost as if English is a spoken language, and Japanese is a written one.