There are quite a number of "people who matter" (amongst whom I do not number any politicians) who suggest that a No Deal Brexit will be the best form of departure for the long term welfare of the UK, Jim. They are people with entrepreneurial skills and experience who see our ties to the EU as a hindrance to our future growth the majority of which, by any measure, will be gained from outside the economically shrinking EU.
UK politicians collectively have failed to display any vision or opportunism that proper Brexit presents. Instead they have, from the outset, treated it as a damage limitation exercise and a problem to be overcome rather than an opportunity to take the country in a different direction. They have failed the nation in a disastrous fashion and it is no use, as you often do, "blaming the Leavers" for the situation we find ourselves in. The seeds of Brexit were sewn many, many years ago and the referendum was the inevitable result of the EU's utter contempt for democracy among its member nations.
It is no wonder that politicians fear a No Deal. Their contemptible shortcomings in planning, from the outset, to keep the country as closely aligned with the EU as possible singularly failed to understand what the electorate voted for. Their actions in doing so have left the No Deal option as a far more hazardous option than it should have been and will leave them with a lot to do (which they are not used to). If the UK "leaves" under Mrs May's deal the repercussions, even among Remainers, will last a lot longer than the end of next week, which, for many politicians, is the "long term".