It's forced diversity, none of us signed up for it. Bring in 100k immigrants per year and see how they adapt. Has anyone ever said Asian, African or Latino countries need more diversity? Nobody wants to move there for a better life.
It is not diversity. Countries inhabited by white-dominated population want low cost
labors. That explains why it is mainly countries like the UK, France, Germany, Canada
and the U.S. who ended up with diversity of their population through importation of
immigrants from countries with lower living standard which are dominated by non-white
population.