@deviant I think fundamentally you’re a nationalist, your identity is tied to where the borders are. Personally I put membership of the world’s biggest free trade area, and the right to freely live work and study in the wonderfully diverse continent, above which city the court is in.
Immigration – the govt has had decades to deal with this, most comes from outside the EU, and many Brits move to the EU too, counterbalancing that.
I don’t believe there was any prospect of UK being in the Euro. And the police/army thing, _if_ it had happened we’d have vetoes or opt-outs. (By leaving, we don’t).
As for the racists & xenophobes, you’re not, but they voted with you (or you with them) to produce the win. Worth a thought.