I'm a major culprit, so I guess I have to say something:
It's like watching an accident. Horrible, but intriguing. Nazi Germany stands out as a high (or low) point in human evil, the fact that what was by and large a civilized nation could err so grotesquely has a dark, unsettling fascination. But shutting it away and making it a taboo is no way to deal with it.
And the Nazis, btw, hated jokes about themselves, they would murder you for it.
I can do all three: Marvel at the technology of a Kingtiger tank (but not forgetting that it was a means to a horrible end), crack low pc jokes about Nazi/German clichées (how does the saying go: "German jokes are no laughing matter!") and be devastated/shamed when seeing a concentration camp documentary. And if you read closely, then we have reasonable in depth discussions/comments on all three areas here in various threads though the screwball jokes are of course
ze Löwenanteil, jawohl.
"Don't mention the war!" (Fawlty Towers)
was never for me. It deserves discussion again and again both from a historical/sociological perspective and as the controlling ritual of ridiculing demons.
No one here has ever seriously identified with or defended the Nazi mindset though. In another forum in another time with largely the same people we once had someone (not a member here) who defended Italian fascism along the lines of "it wasn't all bad, you're just not allowed to say that today" and he hit vocal disagreement from everyone like a brickwall. And the Italian fascists compared to the German Nazis like a goldfish does to a Great White.