As I said, the world needs Jews just to have a convenient whipping boy, if nothing else. But I'll give you one thing that ALL of Western Civilisation depends upon. Hell, for that matter, so do the Muslims, even if they hate to admit it. Without it, none of you would be where you are today. So, let me grant that you could invent everything you have without our help (which I doubt, but for the sake of argument, fine). There is one thing you could not have created. The Jewish Bible (the Old Testament to you Christian influenced types). Without that, your entire worldview falls apart.
Without the Hebrew Bible, you would only have Greek philosophy, which in and of itself is not enough to keep a civilisation of any sort afloat long term. The fact is, they denigrated women and promoted homosexuality as ideal. That alone was a fatal fault that would have (eventually) destroyed their way of life. The Greeks were fine philosophers, and great artists, and so-forth, but their morality was in the toilet.
The pagan Germanics and Norse could not have welded themselves into a unified force without the fiction of "the Holy Roman Nation" and all that, which harks back to Roman Empire, which itself was Christianised, which religion came from guess what, Judaism!
Fundamentally, without Judaism as a motive force, Western Civilisation (and the Muslims as well, but that is a different conversation) breaks down. This is a fact that simply cannot be denied. Welcome to real life.