“Why exactly should I be enthusiastic yet…”
Because the electorate voted to extricate our country from the car crash that the EU has become, jim. The worst, the very worst, that the EU can do is offer no deal whatsoever. That means trade would be undertaken under WTO rules. There is virtually no chance of that happening as the EU has a huge trade surplus with the UK. There is no “single market” in services and the biggest worry for many in the finance industry, the loss of the UK’s “passporting” facility enabling us to conduct euro transactions, is likely to be unfounded. Article 46 (or 47, cannot recall) of the Lisbon Treaty allows “third” countries (as the UK would become) to conduct such transactions provided their regulation regime is compliant (which the UK’s certainly is).
“In that sense the vote in favour of leaving the EU looks -- for all that Brexit supporters try to insist otherwise -- like the UK trying to reject the world or turn away from it at least to some extent.”
On the contrary, jim. It is the EU which is introvert, with its protectionist views, shackled by the need to compromise to please 28 countries. By contrast the UK will reach out to the rest of the world (population 15 times that of the EU) to countries that are growing rather than stagnating.
There is every call to be enthusiastic about the new horizons which will undoubtedly open up as the UK disentangles itself from the tentacles of the EU because almost any situation, even the very worst imaginable, in which the country may find itself will be infinitely preferable to the one we are in now. People need to lighten up, brighten up and stop believing we shall all perish if we cut Nanny EU’s apron strings. Yes it will take time but it will work and we will all be much the better for it.
Now I think I really am out of the "Brexit" debate - at least until things begin to happen.