Quote Originally Posted by oskar View Post
Only that there isn't much in terms of actual numbers that would support that. The US and Japan are both high up the list when it comes to prosperity and quality of life, yet they are polar opposites in terms of diversity.
So? Is it really a numerical analysis?

Is a unified ethnicity important in Israel? Fuck yeah it is. Just because it's less important, or even unnecessary, in the United States doesn't mean that it's less important, or even unnecessary, everywhere. The influence of ethnicity on cultures and customs differentiates those customs and cultures from others. There are obviously downsides to this, as illustrated in the pic you posted. But there are also upsides as well. For example, the ability of free people to choose the cultures and customs that best suits them is really important.

I'm sure you agree with this because you said:

Studies that deal with the economic impact of immigration unanimously agree that it's a positive driving force on economy in the long term
.

So, if diversity is diluted, then obviously that effect would extend to the cultures and customs of the diluted groups. And as things become more homogenized, you no longer have any need, or practical purpose, for differentiating customs and cultures. It's not hard to imagine this effect to lead to the convergence and merging of governments. And then following this to its logical conclusion, you end up with one homogeneous, all-powerful, planet-ruling super government.