Funny question to ask, first of all why do you have himmler avatar?
Secondly, America DO see them as beacon of evil. Dont be silly duuring. When Europe got fucked, where do those people go? They come to America, we have thousand of refeugee coming in and creating thousand of generation in US. In school they dont teach us about the war. They spend weeks focusing on holocaust. They focused on it so much that it once drove me ashamed to be German and i used black marker to cover up the German flag on my West German jacket. Silly i know right...but that's how serious we are being taught about the war crime of 3rd reich.
Duuring, my Great grandmother went through auschwitz, you don't see me whining or judging the Germans for it.
Heres why I do Heer. I grew up with fascination of German uniform and equipment. American uniform looked like shit/junk compared to Heer. The fact that I can get in that uniform, dig a foxhole and wait to be shot at is a wonderful way to learn what was it like for a ordinary soldier in WW2. It is a educational trip for me, as a historian, you know the battle and couple gears, as a reenactor, you know every shit that went on field and how they were carried out. A historian wont tell you how they marched in German, a reenactor would.
Now About that "admiration" part. Nobody is admiring the Reich. That shit get you immediate ban from having membership. And there are shitton of Europeans doing WW2 trust me. Shitton, it just they don't have amendment one protecting them. So it is usually a super secret or modified (removing all nazi symbol). Nazi symbol being publicly shown get you in jail in Europe while in America, you just face angry mob, higher risk of not having a job (they check your facebook upon applying for jobs), but not the federal. That's why you see more ww2 stuff coming out of NA than EU.