Growing up speaking German and learning Japanese later, while spoken English, German etc can be easily as beautiful as spoken Japanese, I have to say there's a beauty in the Kanji/Hanzi writing system that just doesn't have an equivalent in our languages.

I started out learning Japanese because I liked Japanese culture like a lot of people and never was a "language guy", but at some point I just got addicted to learning kanji. When you can start to just guess what a Kanji means and you don't even know why that's such a satisfying experience.