Gasp! Immigration does not merely enrich a culture and a people, it changes them forever, as the example of Germany shows:
https://gefira.org/en/2018/03/26/do-germans-still-belong-to-germany-in-the-near-future/
“The speed with which the German population is shrinking seems to be even too much for the statisticians of Destatis, the official German bureau of statistics, who posit that by 2060, with a zero level of net immigration, the German population will have declined to 60,2 million. However, our research team has found out that this number is far too optimistic: in 40 years Germany will have a population of 52,6 million people, a considerable 34% drop from the current 81 million inhabitants, and by the end of the century the native German population, the indigenous people without a migration background, will have shrunk even further and be approaching 21,6 million. The explanation that Destatis has mailed us is tantamount to admitting that their projections are unrealistic, admitting that their projections are unrealistic.