The issue of immigration isn't just about jobs. It's about cultural identity.
Look at Ireland, the levels of immigration that have taken place over the past 20 years has changed the culture on the island. The children of people who immigrated there will change it further. On such a small island, those changes will be profound. The history and cultural practices will become diluted, but the disruptor will also not be present in sufficient numbers to replace what was "lost" with something more tangible. The result will be a sort of gradual erosion of what makes Ireland "Irish".
You can see it here too,there are huge areas within some cities that a lot of people would consider to be "no longer British", whatever that might mean.
When councils have to put up signs and have paperwork available in multiple languages, people begin to question where it will all end.
No single indivdual can ever be a "net" contributer, how do you quantify the cost of travelling down the M4?
Did YOU pay for it all by yourself?
It isn't just about using "services", it's more nuanced than that.
Think of it like this. If you lived on a street with 100 houses, 85 of your neighbours were local "British" people, born and raised for generations in the immediate area. Then suddenly (I'm making this up for dramatic purposes) 80 houses were sold to purple spotted Martians. Who moved in, parked their space ships on the front lawn, played Martian music, spoke Martian, lobbied for Martian rights, wanted tentacle ramps put up on all public buildings and business premises, demanded Martian speaking Teachers at the local primary, and called you a Martianist for raising any objections.
You might begin to feel like you longer recognise your own neighbourhood, and maybe not feel welcome there anymore.
It's a hugely complex issue, and money and jobs are not really the focus.
We are going to have some very challenging years ahead trying to navigate all of this.
It's a global problem, and it will require a global shift to find a way through.
Are borders still appropriate?
Should people just allowed to move anywhere they chose?
Now that we can "work" from anywhere, should we be allowed to "work" in other countries, could someone living in London "work" remotely for an American company?
Ideas on a postcard please.