Didn't you call yourself Jewish before on reddit?

No, I was called Jewish on Reddit because I disagreed. It's the "everyone who disagrees with me is a Nazi" for Nazis. I took that as a flair of pride.

A country with diverse groups will always be weaker off . Hell even just a mix of European groups like America would never be as unified or strong as Germany used to be as a single ethnic group with thousands of years of shared history.

This example proves you know nothing about the history of Germany or the German peoples. The first time any Germanic peoples were united was under Bismark. For the previous thousand years, they were entirely divided and set against each other. Even Germanic co-operation was relatively rare all the way up to Napolean. Many Germans still do not like Prussians, which are their own cultural and ethnic sub-group of Germans.

Do you think diverse groups would have the same loyalty and dedication to their country as Japanese did to theirs when they committed kamikaze attacks?

Yes. I've read other Silver Star, Navy Cross, and MOH citations that can prove it.

Maybe you've never had anything in your life worth dying for. The rest of us die for family, die for friends, and die for a cause we believe is just. The guy who goes to die with you, by choice (rather than by drugs and propaganda like the Kamikaze), is prepared to do so for the same values that you've chosen. Not because he looks kind of like you.

The point is diversity is not something to strive for. Ever.

Idiocy. Genetic diversity is an imperative, otherwise you are arguing for incest at worst, and asexual reproduction at best (which is a shitty form of reproduction).

Diversity exists for a point: it can make a system stronger through being harder to defeat, and being more adaptable.