I would agree that many people would have voted a different way if it were possible to turn the clock back to the referendum. However, we can't do that, and going back on the Brexit decision would now be a case of going to the EU. and saying 'we made a mistake, please throw article 50 away', which, for many people, would involve a loss of face. There are many people who think we made a mistake, but, having driven off the cliff, can do nothing else but try to steer our vehicle into safety at the bottom. This is why the Tories are so far ahead in the opinion polls - because nobody can imagine a Labour negotiating team now taking over the Brexit negotiations. As a result, the Tories now have almost the entire Brexit camp on their side, whereas the remain, or 'soft Brexit' camp is split over several parties.