Because of where I live (which is where I was born and bred- followed by all my adult life in UK, with British OH)... our situation is quite different. We have lost more than anyone in EU on the exchange rate- 60% so far- which is humongous- but it also means, that even if we sell at price as we bought (and that is realistic) - we would make that 60% back immediately- and as we still a flat in UK- would be able to buy a nice property.
We also have dual nationality, so not at risk at all from residents' permits, and our health care, via form S1 is now guaranteed as Switzerland has signed a reciprocal Treaty with UK.
We are lucky - our only major problem is that massive loss of income, 60%, due to the fall of Sterling, combined with the rise of Swiss Franc- and the fact it may get even worse. We also have Freedom of Movement- so could go and live anywhere in EU.
We are very lucky- the choice will be ours. But I will NOT be forced by Brexit to move back - if we ever do, it will be OUR decision, and ours alone. In the meantime, we have tightened belt, big time. We have space to grow fruit and veg, and space to have a few sheep and chickens, if need be.
The vast majority of Brits in the EU, will NOT have healhcare provision, and no guarantee they will get permission to stay. Seems like some would love to see them fail- watching them with those green eyes - sad.
But as said, if 1000s have to return destitute- it will put huge pressure on social and health services, and housing- for sure.