The European Union has benefitted the few at the expense of the many.   Taking pride in one's nation including respecting the tradition and value system of the nation is how the majority define their nation.  The majority voted to maintain their culture, their way of life,  the meaning of the word Englishmen, English women, English countryside.  Without preserving their nation they might as well have given up and not fought World War II.    It's how they define the meaning of their life.  The majority of British no longer want a trojan horse in the midst.