Even if that was true, remember that UK had for years been the main cause of fights within EU. The British approach to making a deal was "this is a disaster,

Even if that was true, remember that UK had for years been the main cause of fights within EU. The British approach to making a deal was "this is a disaster, we should have be given at least twice that". After 30 years of that, a divorce was for the best solution for both sides. So whatever the cost, it was worth it.