Most countries aren't in a union like the EU but manage just as well. You'll have trade, relations, etc. with the continent, just as America and other countries do.
So much wrong in such a short post.
To give a simple example, the US CANNOT export its food to the EU, and no country can do so, without tariffs or quotas, which is what the UK could do as a member.
Why can't you kids travel, study and live in Europe.
You missed the key word - FREELY. Individuals can look for places at universities, or apply for jobs, but they have to accept quotas, visa limits and local labour restrictions. In the EU a person can (within some limits) pack their bags and study or live in another country. As from next year we will need a special visa to spend more than 90 days out of 180 in the EU.
Why can't foreigners augment the skills of Brits if needed?
Same reason - visa restrictions.
Maybe the restriction now will help Brits get the jobs, something of advantage to your compatriots. No?
Maybe, but I think diversity is a benefit.
Also, you won't be sending money to those lazy countries who sponge off the rest of the EU.
Nobody is "spongeing".
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