Because this country is being dragged in directions which no one wants and is a dramatic drain on our resources already more than fully stretched. To be free of the shackles would raise the spirits greatly and spur the country on to be great again.
It is very clear that the vast majority of the British population would now be in favour of a withdrawal from Europe. The original concept of a Trading Community has developed in to a situation where every facet of British life from economic, political, social is being dramatically adversely affected by Europeans outside of the U.K wishing to be fully in control of an integrated Europe. This is far, far beyond the initial intention and well beyond the intentions and vision of the British people at the time of the Referendum. They voted for "economic co-operation."
We as a nation cannot afford (and should not support) the economic, political and social instability of so much of Europe and the clear intention of Germany and France to dominate.
We can prosper without the weight of those countries around our neck and without doubt the advantages will far outweigh the disadvantages as we return to true British standards.