Brexit was the result of an
internal Tory Party spat, having zilch to do with governing the nation, about whether the UK should be taking a leading role in the EU, as desired by the Party leaders, or striving to be entirely independent, as desired by a small but vocal group of back-benchers, whose support was needed to maintain a commons majority.
"Knowing" that the public were basically supportive of a strong role for the UK in the EU, David Cameron decided that it would be a great idea to shut the Euroskeptics up, by delivering a referendum showing that they lacked popular support.
So sure was he of the outcome, that no effort whatsoever was put into the question; Nor consideration given to the shape or form that "Leave" might take, if it were to win (which was clearly absurd).
The question asked was simple - to the point of being lethally simplistic:
"Should the United Kingdom remain a member of the European Union or leave the European Union?"
This sounds like a reasonable question - but it's really not.
Imagine a US Presidential recall referendum. "Should Barak Obama remain President of the USA or cease to be President of the USA?" is not a complete question. If the answer is "remain", then everything is fine; But if the answer is "cease", what then? Who is to be the new President? Nobody has a clue - so anyone who is in any way annoyed at Obama can assume that it implies any person they want as the replacement President.
So the votes are tallied, and by a razor thin margin, "cease" is the "will of the people". Who is the new President? Nobody knows. More importantly, none of the candidates has as much support as Obama just got in the vote. But "cease means cease", so when the Trump supporters are shouted down by those (the vast majority) who hate Trump, they just declare that Trump has a clear mandate - though nothing of the sort is close to the truth.
So with Brexit. There's a clear mandate for "leave", but while everyone knows and agrees upon what "remain" means, there are as many opinions about what "leave" means as there are "leave" supporters.
The people have spoken, and what they demand (by a razor thin margin) is, clearly and unequivocally, "something".
Enter the very vocal nutters of the far right. They now have a (totally nonsensical) mandate, and a PM who is so obviously inept that he fucked up the un-fuck upable.
Exit Cameron stage left, pursued by allegations about sexual misadventures with a dead pig.
He broke the UK, over an internal party matter, and then bailed without the slightest effort to mitigate the damage, leaving an irreperable mess.
The whole thing was a disaster from go to whoa. It was an advisory referendum that had no ability to advise; And the only guy who could have stood up and said "Well it was never binding, that's why we had no Parliamentary Bill hashing out the details of what 'leave' would entail", instead bolted for the exits as soon as he realised that he had fucked up. Leaving the nutters in charge of the asylum.
Meanwhile the people, many of whom were as sure as Cameron that "remain" would win by a country mile (and so didn't bother voting) were left to suffer the consequences, which include (but are not limited to) the bankruptcy of the UK, the elimination of the significant influence the UK had in EU affairs, the elimination of free movement and unlimited EU residency for UK citizens, and the massive and needless expense of duplicating EU bureaucratic activities, from Air Traffic Control to Zoonosis detection and mitigation.
There has literally been nothing good for the UK or her citizens that comes from Brexit, and the bad things form an interminable and tragic list, too large to reproduce here.