The UK does not need the EU largesse. Yes, some parts would make life easier, but once UK is gone, it’s gone, with or without the EU window dressing.
You know perfectly well that the EU will dig its heels in, just to deter others. The UK also understands this.
You should also understand that UK is determined to leave, no matter what.
End result, ask for the world in a gift wrapped basket. Take whatever you can get. There are areas that the EU still needs to satisfy for major members. The UK may, or may not co-operate.
Whatever. UK is leaving, with or without the EU candy.
Its good to know that you have choices, despite your longing for retirement, somewhere, anywhere.