It is only short sighted the perception that Iron Pact would not go for world domination after securing the "vital space". So soviets. Remember, soviets, not communists. It was not a communist regime, but a soviet one. And a Marxist-Stalinist one, after that.
Concluding that Hitler's regime would collapse is only wishful thinking. Altho there were severe imbalances in German economy in year 1.936, and admitting that they could eventually lead to an economic crisis, the situation was one of an overheated economy. So, eventually, it may not collapse if proper measures were taken.
About the harm to the US, just think about WWII taking place in 1.945-1.950 instead of 1.939-45. Even worse, think in an hypothetic WWIII against the Iron Pact now comprising a whole united (by then oppressed) Continental Europe. How would U.S. cope with extended range V2's (just to put an example)? Not that U.S. & Allies would not win the war, but I'm sure that USA would suffer a hell lot more in its own homeland.
Spanish Civil War ended in 1.939. The point is not Spanish Civil War, but how the USA looked with a blind eye to a fascist government in exchange for Torrejón Air Base and Rota Navy Base, just some 5 years after WWII ended. From my point of view, even political-wise, that movement do not show a high standard, in moral terms. Not that I care much, I like Spain like it is today, and history is only intellectual curiosity for me.
Anyway, the point of this thread was about US-Bashers, and why the rest of the world hate Americans. If you read the answers, you will get the picture. Most of us do not hate America. Plus, most of us like it (and Americans too). Even more, we do not hate the few arrogant and/or ignorant characters that degrade the rest of Americans. Most of us disdain them. I'm sure you do as well. Poor souls, after all.
Cheers,
Pepe.