What would happen if Britain just simply quit? Walked away. Cut all ties to the EU? The people of GB voted (wisely - one of the few good decisions in a long time) to leave the bloodsucking EU - get it done. What, will the cheese-eating, surrender-monkey French go to war?
Funny - US Revolutionary War General and First President, George Washington (I believe it was) warned of ties that bind... GB made a deal with the Devil - and the Devil doesn’t give up his contracts easily.
A "no deal" exit simply puts the UK under WTO rules and they are free to trade with whoever they wish, subject to certain import tariffs that any other nation has to deal with that does not have a specific trade agreement with the EU. That is definitely better than this nasty agreement that May has taken to Parliament for approval.
The "Remainers" among the Tories passed May off as someone who didn't approve of Brexit but would work fairly to negotiate the best deal possible. She flat out lied and created this monster which hardly anyone is agreeable to, at least the Brexiteers hate it.
May has a 19% approval rating on this deal and there will likely be an election in the future which might have it's own risks. Rees-Mogg has issued a "no confidence" letter and others will likely follow forcing her out as PM. The Tories might be able to replace her without an election but I have a limited knowledge of British rules , and it probably shows!