Take a look at a map you numbnuts.
Plus the UK is 100% an EU country still, until article 50 gets invoked. The chances of which are slim. And even if it were to be invoked, there's no guarantee you'll get your Brexit at the end of the negotiations. Or that the United Kingdom would actually survive that as a united political entity.
And guess what. Yes. 17 million people in the UK are dumb. Or racist. Or both, as those things do go hand in hand.