[telmo]

> they are too far away

The USA and the EU have comparable size. Is Washington DC too far away for the USA to work?

> too diverse

The USA is widely regarded as a cultural melting point, and it's ability to attract immigrants from all corners of the world part of the reason for its economic success. I would argue that the EU is less diverse than the USA.

> too big to be trusted

Brussels bureaucracy is in fact relatively small when compared to the national bureaucracies of western countries. This claim was repeatedly made during the Brexit referendum campaign. Interestingly enough, the UK's civil service is aprox 10x the size of Brussels (350k vs. 40k, resp.)

These are claims that are repeated ad nauseam by people who have antipathy towards the EU, but they have very little substance indeed.