Brexit - Causes of indecision

We are modelling various aspects of Brexit, the UK's decision to leave the jurisdiction of the EU political union but to remain a strong friend and ally of all European sovereign nations.  

In this model we illustrate the many times the UK has been undecided about its membership of the EU and all that this implies and entails. The model suggests that this raises issues about the nature of UK politics. There may now be good reasons to leave the EU jurisdiction legally (given the way the EU has behaved during the UK 'negotiation' and the growing unease about the nature of the EU by other nations). The UK stance to the EU institutions, Brussels specifically, has historically been ambivalent at best and uncommitted at worst. Oddly, the UK helped shape much of the European Project and its treaties. Does this reflect a divide between the 'people' and the 'political class' ... sometimes called the 'elites' who 'know what's best for the people'. Has this been a cause of disconnect, a failure to take the people with them? What are the causes of the unease and indecision?