There's been none of the apocalyptic predictions. In fact the FTSE100 is higher than it was before the referendum. There's going to be a short period of adjustment, but in the long run we're better out. The pound is down because all the banks bet billions on Remain and lost - including Virgin.
Remainders have been deluded by the EU ideal that is not the reality. the EU is the privatisation of government, and in collusion with big business. They hate democracy.
They kept, until after the referendum, the plans to start the EU army and the takeover of national central banks. This will happen to the 27 unless they get out. The EU will acquire competency over taxation, including corporation tax and income tax. They already control VAT (sales tax). VAT went up to 20% (from 17.5%) following handover to the EU. Almost all that difference goes to EU funding.
The cost of membership of the EU is rising every year. Why do we need to fund both a national government and an international one. It's all just greed.