Well, that and I feel myself connected to Ásatrú (translates to "Asentreue" in German, or "Faith in the Ćsir"), which is basically the old Norse belief.
I wouldn't say that I believe in the Norse gods, it's just that I consider it to be the religion in which I would put the most trust. I might word it as not believing, but hoping.
Edit: also if you want to learn more about the Norse belief system, read the Edda. Start with the prosaic Edda. The best (and cheapest) translation available in German is by Arnulf Krause. The typical translations (Karl Simrock and Felix Genzmer) try too hard to keep the sound of the poems and stories, which makes them very hard to read. That might be wanted in the poetic Edda, but not for the prosaic. So if you want a good introduction buy "Die Edda des Snorri Sturluson" and "Die Götterlieder der Älteren Edda" in the "Reclam" edition. Cheap, but good. You miss about a third then (which is in a third book), but it's a very good introduction, and contains most of the important stuff. Read the prosaic Edda then and keep the poetic Edda at hand, as the prosaic Edda refers to the poetic Edda multiple times.
Oh, and by the way, skip the prologue of the prosaic Edda. It was written, when most of the Nordics were already christianised, so the prologue tries to fit the Norse myths into a Christian environment.