You are so dead wrong it is not even funny.
It is when Jews try and assimilate that that Hashem punishes us the worst. Trying to be like the gentiles and breaking down our separation is the most dangerous thing for us. There is a chazal that says "Eisav sonay es Yaakov" That Eisav (the gentile) will always hate Yaakov (the Jew).
Gentiles come to despise us when we break from our heritage and G-d will always remind us of that when we try.
In every instance in history (especially pre WWII Germany and pre 1492 Spain), many Jews were affluent and assimilated--They viewed themselves as Germans first, Jews second-- G-d punished us for it.
remember the old saying "If Jews don't make Kiddish, then Gentiles make Havdalah"
Study your Talmud, and you'll see I'm correct. A Jew means being, and living like a Jew not like "the nations of the world"
Except that the time the Jews were the most assimilated in Spain was "The Golden Age" of the 10th to 12th centuries or so. It's fall wasn't due to assimilation, but the military conquering of Spain by more militant Muslims, followed by militant Christians.
The Nazis are an exception, but for the most part, the history of Jews in Western Europe for the last 200 years has been one of assimilation and tolerance. Especially in this day and age, when not only can Jews become gentiles, but gentiles feel free to become Jews. (Indeed, I should note that the first person to encourage my wife to convert was a Christian in a conservative church.)
A rootless tree topples and falls. But a tree that doesn't reach out is stunted and sick. And I spend much of my life, going out on various limbs.