It's worth noting that, we as a country fail to integrate those people. It's not their fault.
It's worth double-noting, that those people are not the people we're removing ourselves from. We're actually removing ourselves from those who are culturally similar enough to integrate independently.
Immigration is /going/ to happen, it's a net positive for the country, in fact it's required to sustain the country. You've just ensured that it's the "brown people" who get imported.
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Please bear in mind, I have no ill-will to anyone from those countries, but when people argue against immigration it's almost always because of the polish (which was hugely self-inflicted) or "brown people". The majority of leavers I know don't expect this outcome, they think it'll be a net decline in all immigration (including those from India, Pakistan etc;)
because? If it's because we aren't fertile enough, or our education system isn't good enough, or we aren't paying enough for certain jobs, why not address this?
I'm interested to know whether you think there should be any upper limit to the population of the UK: 100m? 500m? more?
Also - a population highly burdened with a lot of children tends to produce less value. It keeps more people out of work.
Brexit is about having fewer immigrants in the country.
My driving instructor was very honest with me, even if I was a foreigner. He said 50% of his students are foreigners. But he still voted for Brexit even if he knows it will make him worse off financially. He just wants fewer immigrants in the country.