Maybe this account of what's happened in Denmark can shed a light...the Danes - as is known worldwide have a great welfare system - much more generous than ours. It's paid for by Danish taxes and the entire population working - 99% of Danish women with children over 1 year work full-time and the children are in wrap-around daycare, and after school clubs - it is rare to see any children between aged 1 and 16 in public on a working day before 6pm - they're in after school/daycare clubs. They are compliant about taxes cos of the massive benefits they get - like totally free University tuition! etc. But recent immigrants, in particular from traditional muslim countries, have disrupted this economic model - these women don't work outside the home - many more are dependent upon benefits - they have been settled in public housing that have become ghettos - to the point that some generations down there is no assimilation to Danish culture - children start school at age 7 having not learned Danish in nursery - future prospects poorer, some were radicalised and ended up fighting for Isis abroad...which in turn generated a reaction from Danes - the tax payers who had funded the education and lifestyle of these home-grown jihadis -
The Danes Ideas include: no female chid can marry abroad and bring home a 'husband' from, say, Pakistan until she is over 25 and makes more than £30, 000 per year - this law, brought in by a right wing party was not repealed by the recent left coalition because it worked to end forced marriage; breaking up the ghettos and dispersing immigrant communities; totally refusing to comply with EU requirements to accept a certain number of refugees on the grounds that they cannot assimilate to Danish society; housing illegal refugees on remote Danish islands....
And to those who - like all of us - want to welcome to our shores the refugees and those escaping conflict - what is your figure - the number - the UK should accept? If our population is increasing 1/2 milliion a year, are we going up to 80 million, 100 million? And of those, what proportion will assimilate, or intend to assimilate? In the UK we support 5 million on 'out of work benefits' - that's the entire population of Denmark - what can we stretch to - 10 million?
edition.cnn.com/2018/12/05/europe/denmark-immigrant-island-scli-intl/index.html
Finally, having lived abroad for 11 years myself, it was never my intention to assimilate...I wanted to get an education, expand my horizons, live - but I always wanted to come home. As I think many immigrants do - or create a facsimlie of 'home' wherever they are - as we can see, dotted throughout the UK, with all their positive and sometimes very negative qualities.