I don't think it was a smart move, for Hitler, to declare war on a powerful nation like the U.S., in 1941.
When you study the psychology of violent people, you often find that they have previously themselves have been victims of violence, it's a kind of vicious circle.
When I read your post, I don't find a great deal of concern or compassion for cities and civilian populations massively bombed by the British and American regimes (heard of Hiroshima?), in order to achieve their goals of unconditional surrender, invasions, occupation and humiliation of their opponents. I wonder why. Has it ever occurred to you that many Jewish lives could have been saved by trying to bring this war to an end much earlier, for example at the end of 1943?
Has Charlie Brown says: "Good grief!". So Britain and France are morally coupable and at least partially responsible for Hitler's atrocities by declaring war on him. In fact according to you the Poles should not have resisted Hitler by arms and ditto for the Chinese resisting the Japanese. Which is a nice way of offloading responsibility for atrocities from the guilty to the innocent.
You also are saying it appears that Hitler merely made a mistake in declaring war on the USA. (I note that Hitler had been pushing Japan to attack the USA and Britain before.) But accepting your logic then Hitler is at least partially responsible for the destruction etc., caused by USA participation in the War.
Then you mouth some explaining about violent people. Mere excuse mongering. So what Hitler was and is fully responsible for his acts of mass murder etc. He didn't have to it just like he was not in anyway coerced into invading Poland in 1939.
Has for the last bit. Thanks for reading my mind wrongly. You should know I think that area bombing of civilian areas in World War II was both a mistake and a crime. But has for compassion, concern? While yours does indeed seem to be very selective. Both the Nazi and Japanese regimes were very interested in occupying, enslaving and grinding down resistance to their invasions via terror etc. They engaged in bombing, slaughter etc., to crush such resistance and both really loved humiliating their enemies. Yet you seem to condemn armed resistance to such acts. And rather interestingly you seem to think that Japanese and German armed resistance to unconditional surrender, occupation, humiliation etc., was at least understandable. Why? The Japanese and German's could have resisted by peaceful means and just let themselves be conquered. (Snark)
As for saving Jewish lives. Well aside from the fact that well over 1 / 2 of the Jewish victims of the Holocaust were dead by then. There is the question of who would have ended the war. Hitler would never have given up his conquests. He had burned his bridges long ago. Peace would only have come only with the overthrow of the Nazi regime. Otherwise no peace. As for Japan, right almost to the end Japan wanted to retain at least some of it's conquests. Hitler would of course have fought to the end to stay in power. His overthrow was never a likely possibility. (Which is why assassinating him was an absolute prerequisite to overthrowing the regime.)
Oh and I seriously doubt that ending the war in 1943, if it left Hitler in power, would have ended the Holocaust.
You are of course accepting the excuse mongering put out by German and Japanese diplomats and Generals that "Unconditional Surrender" forced them to fight to the last. This trope was very popular in the 1950's and into the sixties. However it is very seriously overdrawn. A great deal of it is post hoc excuse mongering by people trying to explain away why they went along with a tyrannical regime(s).
In fact far more responsible for continued resistance was the delusions of the leadership about retaining their gains, a very effective repressive apparatus keeping the population in line and obeying to the end. And of course in Germany much of the civilian and military leadership had been Nazified. Something similar had happened in Japan. And what has until recently been ignored almost entirely by historians - large scale bribes paid by Hitler to Military and Civilians. (Tax free of course and secret!)
After the war many German Generals concocted stories to explain away their loyalty to the end to the regime. Unconditional Surrender was one of those. Another was their oath of personal loyalty to Hitler, (!934), ignoring that they frequently violated their oaths of loyalty to the Weimer Republic, and, also, frequently the oaths to tell the truth in post war trials.
Your compassion, like your indignation, has per usual is selective.