Child of British parents here, hope you don't mind me contributing to the thread. My single parent dad and all of my surviving grandparents voted for Brexit. I voted to remain (I was 18 at the time). We are very much a working class family. I am livid about Brexit. I was lucky enough to do some work/travel in the EU before my FoM was taken away. I had to work and save bloody hard to do it, but other than that it was pretty straightforward, and it was the making of me. I came back more independent and confident in myself.
I have a younger brother who is about to start uni. He won't have the same opportunities as me. Sure, he can go to Canada or Australia etc, but Europe is closer and therefore more convenient. I think that's a huge loss of opportunity for him.
My dad doesn't like to talk about the Brexit vote with me. He says he voted leave to 'get rid of all the red tape.' But there is more red tape now. I imagine he's embarrassed, but he probably won't ever admit that he didn't actually get what he was looking for out of Brexit. I imagine lots of people feel the same way.
One of my grandmas actually told me she voted leave for her grandkids futures! Gosh, if that was her logic, I just wish she'd actually asked me what I thought before she voted!
I can only hope that we'll regain our FoM somewhere along the line, but we'd need more people (and political parties) to start acknowledging that the whole thing has been a bit of a shambles. I hope we rejoin in some form in my lifetime, ideally with enough time for my own kids to benefit when the time comes.