2016 the Year of BrExit – Exactly Why it Happened

Exactly why did BrExit happen in the UK?
It happened because the British Prime Minster David Cameron believed his own fantasy Westminster elite bubble reality to be true, thus in his reality there was ZERO likelihood of the British people voting to leave the European Union 9 months after having surprised the pundits by electing the Conservatives back into office. After all if the rebellious Scottish people had voted to REMAIN within the UK who had the highly vocal and organised Scottish Nationalists in charge of running the Scottish government, then how was possible that the British people, 90% of whom in the 2015 General Election voted for either a Labour, Conservative or Liberal Democrat REMAIN MP could result in a LEAVE vote outcome.