No there isn't. There is nothing wrong with ambition. For God's sake man, what do you expect the leader of the country to do, start crying in the corner because
@devilish @RedCafe thinks the sky is going to fall in for Britain.
You are right though that the emerging superpowers should overtake us but that should happen (remember that they have failed to meet expectations so far) if we are in the EU or not.
The 'isolation' doom mongers are especially annoying, like if you are not in the EU you suddenly become isolationist, it is bollocks frankly. The U.K. will continue to be a multi cultural country trading with the world whatever the case. Some of the Brexiteers might be fooling themselves otherwise but you are both are dead wrong IMO.