I would go so far as to say that no politician in Britain puts forward the case for Europe in these terms. Any pro European argues that it is in our economic interest, and mentions no other advantage. The reason for this is, they could not sell the idea that the European project is decreasing the chances of European war. Indeed, lately, as the popularity of the European project has been diminishing across Europe it looks increasingly as though the main beneficiary of the European project is Germany. Due to the Mediterranean countries keeping the Euro exchange rate low, Germany has benefited from selling it's cheap exports, for years and years. Now that the wheels have fallen off Greece and Spain and Ireland and Portugal those populations look to Germany with envy.
There is a British view, which I am unconvinced of, that the single currency, being done for political rather than economic reasons, has caused, and will continue to cause international European tension.
In short, Britain is not convinced of the economic case, it is not convinced of the moral case, it is not convinced of any benefit whatsoever.
If the Tories win power at the next election outright, which is possible, they have promised an in/out referendum on Europe. If that referendum takes place it is perfectly clear how Britain will vote, they will vote Out.
Then we will be living in interesting times.