You don't have school sports/honor societies/business fraternities in Germany?
I didn't know that. I'm studying in The Netherlands, in a city very close to Germany (As in, if I look out my window I can see Germany!) and we do have all those things. Heck, I'm in my University t-shirt right now!
I also studied in the US, and though the American uni's have stronger "school spirit" (I think it's our lack of American Football and school vs school games! AND the fact that we usually don't live in dorms on campus) I do find school spirit at my Uni. Maybe that's why there's so many German students here
.
It does make me wonder if there aren't many girls like you in Germany looking for that sorority experience. There's definately a niche there for a new kind of sorority.
And if you're at a Uni with only the snobby elitist sororities/fraternities I get why you wouldn't go there.