I've spoken to so many British people who have immigrated from Britain in the past ten years to Australia.
Almost every single one of them breaks into a cold sweat when you ask them why they left. They try to put on a happy-go-lucky smile and act really nonchalant ... then they offer a reason that just doesn't make any sense. Does somebody whose ancestors have lived there for at least 20,000+ years just wake up one morning and decide the weather is too cold? Then pull their children out of school, sell their home at a loss, leave a good paying job at twice the money and fly to Australia without even being certain how they will live?
The best way to describe them is to say they look identical to that man infected by terror at the beginning of Mel Gibson's APOCALYPTO when the protagonist encounters them fleeing through the forest to find a "new beginning." That's what I see in their faces when they are trying to answer this question. I basically ignore what they are saying and just watch their faces. There is a real blind animal terror there that they are deeply suppressing, perhaps for fear it would drive them mad. Let's face it, it is hard to sneer and seem cool when you are fleeing your own native soil after being kicked off it.