You do know that the UK was / is one of the biggest issues to the development of the EU, right? The UK has been creating road blocks for decades, always cherry picking its way between treaties and deal. That is no way to behave in a Union such as this. And that is the reason a lot of Europeans are glad that the UK is going off.
However, with this whole farse, the EU has lost a lot of time and a window of opportunity to further develop is now closing. Macron and Merkel were huge supporters of the EU and were all in for increasing the strength of the union and furthering its tendrils into another aspects as labour, tax. Both leaders' tenure is at an end. So, ironically, by creating a situation of leaving the EU, the UK road blocked the EU again.