I would have agreed with v-e -- and did, as people have been keen to point out -- three years ago, or so. The difference is what's happened between. The present approach to Brexit has seen several wasted years; in my view, at least, that's because the process has been rushed far too quickly, and far too little efforts have taken to prepare for Brexit before Theresa May signed A50. Of course, not everyone will agree with me that the process has been pushed through too quicly ("not quickly enough!", I'm sure TTT would say) -- but, whether by rush or by delay, there's no disagreement that the path taken has been a failure.
I would rather see it stopped entirely, of course, but setting that aside, could there be some agreement for delaying the process, to give a proper chance to repair the damage of Theresa May's approach? Leaving tomorrow (or on March 29th) should be obviously bad economically -- no-one who's paid attention can doubt this, especially when there's been no proper contingency planning -- and, while some may think it's worth the economic pain to get it done, I am not sure it's a view shared by even remotely a majority of Brexit supporters, let alone the country.