The EU works pretty well. Just last week one of my Romanian work colleagues paid an Irish company (Ryanair) only $80 euros for a 2-person airplane trip to another European capital (Rome). All that would not have been possible without all of us being in the EU. For comparison, just look at how crazy expensive airfares are in the States for similar flights. And I could find other, numberless examples from the day to day life with which people have accustomed themselves, they have started to see them as granted, but which would have not been possible without the EU. UK's decision is sheer idiocy.