Tequila and/or Emiliana should explain to me if self-respecting Germans actually drink DAB. I imagine I'll keep buying it either way, but I am curious.
The thing is that both Tequila and I are Bavarian (or live there), so we may not be the best people to ask.
All I can say for myself is that I have never had a DAB in my life, but then I am never in that part of the country. Here in Munich, you'd have to go to specialised "we have 111 varieties of beer"-bars in order to get a DAB on a night out. And I don't usually buy 'foreign' beer for home consumption either (I simply like my Bavarian Helles and Dunkles too much).
My guess is that German people in the Ruhr area do drink it, though.