The problem with Wonder Woman is this whole idea that she came to our world to teach us about peace and niceness and caring.
She didn’t. She came here to fight Nazis. That’s all.
Which is that it makes no sense that the Amazons, after hundreds (thousands?) of years of isolation, suddenly decide to send one of their own off into the outside world as an ambassador. Why now? What makes them think the rest of the world is suddenly worth engaging with?
That’s where the Nazis come in. Because the Amazons see the rise of fascism, and the development of more and more horrendous means of mass slaughter, and it freaks them out a bit. So they have to send someone to help defeat the forces of evil, or even their secluded island won’t be safe any more.
(Yeah, I added the panel, that's not part of the original post. But it's an awesome panel. That's the first time I ever saw the "White Suit.")