What I don't understand it's always seems to be boats and boats of single males early twenty's.
where are all the kids, women and middle age people .
Read the thread. It's explained.
OP do you speak French well enough to work in France? Well enough to tell a doctor what's wrong with you when you're in pain and understand what they tell you your treatment options? What about in German or Dutch?
If you had to flee the UK, would you prefer to live in France, Belgium, The Netherlands or Germany? Or would you prefer to go to Canada, the US, or Australia? Where do you think you could make a life for you and your family? Do you think you could learn French, Dutch/Flemish or German very quickly? Think you'd be able to afford the hundreds of hours of lessons - plus exams that need to be sat to show you're at a sufficient level?
Or would you rather go somewhere where you can actually speak the language?
People talk about this "nearest country" business but if you can't speak the language, WTF are you supposed to do once you're there? Live in a tent for the rest of your life? Even people who like camping aren't up for that.
What Brits generally don't understand is what it's like to not speak the language somewhere. So many people around the world speak English and we generally do not learn foreign languages at all, never mind to a functional level.
It's worth noting that France also receives a lot of immigrants. They're the ones who speak French as a second/additional language.