Interest on money is what kills an economy, this is the predatory tactic the Yehuborim have abused for centuries. Cause money should not be able to create more money or more money value by itself; it should be just a middleman for exchange purposes, the value of it is directly based off a nation's ability to produce or work. It only makes sense this way but this is not how money is operating these days.
By giving an illusion of power to money, the Yehuborim have a system and a tool they can use to exploit the Gentiles endlessly. Economists can stick their theories up their ass saying interest is only "Natural" and in "Order" with how money works. Sure, if you're starting from a system made to suck the life out of you, yeah, its very "Natural" then.
In 100 years of economy theory NOBODY came with a solution to the problems we face today. Sure the 1960s were great to form families, but that was just very early on, specially after the blow the Yehuborim received after WWII, but the storm was quietly brewing ever since then.
In recent history the only ones who solved all of this stuff were National Socialists. Of course this was just one of the many reforms they did, but granted it was a pretty significant one, specially because they rendered the Yehubor powerless.