@Dartwarbler ,
‘Immigration is a great thing- bring in people who can pay taxes in their working life, and support the gaining shrinking younger population, so women here can go out to work if they want without having to have children to support the aging population themselves. It brings wealth’
That is way too simplistic and what a lot of the wealthy educated think.
The right amount and type of immigration is a good thing. Zero immigration is bad but 5,000,000 a year (to choose a very high number) would also be a disaster.
Firstly you need the infrastructure to support an expanding population and that takes time. Secondly you need time for assimilation and integration with the existing population, especially if you are an immigrant who doesn’t speak English. No one resents the urbane Pakistani surgeon who buys a house in Kensington, is well read and probably speaks better English than I do. But if areas become ghettos where English language and culture are secondary, and the jobs the people do undercut working class British people taking away their dignity of work, then of course that causes resentment, but that isn’t racism.
As to it bringing wealth, low skill immigration brings increasing wealth disparity, as the rich and businesses get low cost work. But, the poor, on the other hand, have no bargaining power for their labour.
Also, your idea becomes a Ponzi scheme at some point. What when the immigrants don’t have enough babies and become old? Do you just bring in more new immigrants. That kind of idea supports the (ridiculous) conspiracy theory of The Great Replacement.
I speak, by the way, as a second generation Jewish immigrant.