Parliament itself voted to leave by triggering Article 50. Then the same MPs start playing silly beggars by voting against all the deals put before them for political reasons. We'd be out by now if MPs had behaved honorably rather than flip-flopping.
In giving Art 50 notice MPs gave negotiating authority to a government which had promised, among other things
There will be no downside to Brexit, only a considerable upside
David Davis
10 October 2016
The free trade agreement that we will have to do with the European Union should be one of the easiest in human history
Liam Fox
20 July 2017
I believe that we can get a free trade and customs agreement concluded before March 2019
David Davis
18 January 2017
Within two years, before the negotiation with the EU is likely to be complete, and therefore before anything material has changed, we can negotiate a free trade area massively larger than the EU … The new trade agreements will come into force at the point of exit, but they will be fully negotiated
David Davis
14 July 2016
What we have come up with—I hope to persuade her that this is a very worthwhile aim—is the idea of a comprehensive free trade agreement and a comprehensive customs agreement that will deliver the exact same benefits as we have in the single market.
David David
Hansard 24th January 2017
If the government had delivered what it said was available prior to Art 50 notice MPs would have voted the deal thorough with a landslide. The fact is that the government obtained it's Art 50 authority by deception.